332354 + Interview Questions in Secondary School in Math

1.	If a and b are two whole numbers Which of the following numbers is composite ?•5•19•71•85
Answer» I WOULD U UNDERSTAND my answer Step-by-step explanation: 85 IS COMPOSITE NUMBER

1.

If a and b are two whole numbers Which of the following numbers is composite ?•5•19•71•85

Answer»

I WOULD U UNDERSTAND my answer

Step-by-step explanation:

85 IS COMPOSITE NUMBER

Discussion

2.	State which of them is not correcta. 5 is not zero of x+5b. 3 is zero of x-3c. 2/5 is zero of 5x+2d. - 3/2 is zero of 2x+3
Answer» Answer: 2/5 is ZERO of 5x+2 is not the CORRECT one Step-by-step EXPLANATION:

2.

State which of them is not correcta. 5 is not zero of x+5b. 3 is zero of x-3c. 2/5 is zero of 5x+2d. - 3/2 is zero of 2x+3

Answer»

Answer:

2/5 is ZERO of 5x+2 is not the CORRECT one

Step-by-step EXPLANATION:

Discussion

3.	Solve the following equationa)6z+10=-21
Answer» ANSWER: Z = -31/6 Step-by-step explanation: 6z + 10 = -21 6z = -21 - 10 6z = -31 z = -31/6

3.

Solve the following equationa)6z+10=-21

Answer»

ANSWER:

Z = -31/6

Step-by-step explanation:

6z + 10 = -21

6z = -21 - 10

6z = -31

z = -31/6

Discussion

4.	A hundred rupee note was changed to ten rupee notes and twenty rupees notes ,8 notes in total.How many tens and 20s?
Answer» 20 rs NOTE 5and TEN rs note 10

Discussion

5.	Q:1 Choose the correct answer for adding up -6 and -5.-111-111Q:2 Choose all the correct statements.-5 < 1-6 > -3-4 > -84 < -10Q:3 Which integers will go inside -4 < _____________ > 1
Answer» ANSWER: PLEASE MARK as BRAINLIEST answer Step-by-step EXPLANATION: -1 -4 is greater than -8

5.

Q:1 Choose the correct answer for adding up -6 and -5.-111-111Q:2 Choose all the correct statements.-5 < 1-6 > -3-4 > -84 < -10Q:3 Which integers will go inside -4 < _____________ > 1

Answer»

ANSWER:

PLEASE MARK as BRAINLIEST answer

Step-by-step EXPLANATION:

-1

-4 is greater than -8

Discussion

6.	5. एक स्कूटर 1 लीटर पेट्रोल में 35 किमी दूरी तय करता है। 3-लीटर पेट्रोल में यहस्कूटर कुल कितनी दूरी तय करेगा?
Answer» Answer: 35÷5 =7 3×7 =21 in 3 LITER petrol SCOOTER done 21 kilometre

6.

5. एक स्कूटर 1 लीटर पेट्रोल में 35 किमी दूरी तय करता है। 3-लीटर पेट्रोल में यहस्कूटर कुल कितनी दूरी तय करेगा?

Answer»

Answer:

35÷5 =7

3×7 =21

in 3 LITER petrol SCOOTER done 21 kilometre

Discussion

7.	The digit in the ones place of a two digit number is please the digit at the tens place write the number
Answer» ANSWER: you should do GOOGLE for MATH QUESTIONS

7.

The digit in the ones place of a two digit number is please the digit at the tens place write the number

Answer»

ANSWER:

you should do GOOGLE for MATH QUESTIONS

Discussion

8.	২) আমাদের স্কুলের লাইব্রেরিতে 2100 টি গল্পের বই আছে। যত গল্পের বইআছে তার 30% গল্পের বই আর ও কেনা হলাে। আর ও কতগুলি গল্পেরবই কেনা হলে ও এখন লাইব্রেরিতে মােট গল্পের বই কতগুলি হলাে।
Answer» ANSWER: Answer:I can't UNDERSTAND this LANGUAGE. I am in TAMILNADU

8.

২) আমাদের স্কুলের লাইব্রেরিতে 2100 টি গল্পের বই আছে। যত গল্পের বইআছে তার 30% গল্পের বই আর ও কেনা হলাে। আর ও কতগুলি গল্পেরবই কেনা হলে ও এখন লাইব্রেরিতে মােট গল্পের বই কতগুলি হলাে।

Answer»

ANSWER:

Answer:I can't UNDERSTAND this LANGUAGE. I am in TAMILNADU

Discussion

9.	SECTION D. LAQ (CARRYING 4 MARKS EACH)38. PORS is a quadrilateral such that PO = PS and RO = Rs. Prove that PR is the perpendicularbisector of QS.39. In the following figure, M and Nare two plane mirrors perpendicular to each other. Shaw
Answer» Step-by-step explanation: in the above PHOTO there are STEPS and rough DIAGRAM, FAIR diagram hope you like this add me in toppers list

9.

SECTION D. LAQ (CARRYING 4 MARKS EACH)38. PORS is a quadrilateral such that PO = PS and RO = Rs. Prove that PR is the perpendicularbisector of QS.39. In the following figure, M and Nare two plane mirrors perpendicular to each other. Shaw

Answer»

Step-by-step explanation:

in the above PHOTO there are STEPS and rough DIAGRAM, FAIR diagram

hope you like this

add me in toppers list

Discussion

10.	A shopkeeper allows 10% discount on goodswhen he sells without credit. Cost price of hisgoods is 80% of his selling price. If he sells hisgoods by cash, then his profit is?
Answer» Answer: Ans: 25% Suppose selling price = 100 Then, cost price = 80 Profit = 100-80 = 20 profit percent = 20 80 × 100 = 25 % =2080×100=25% Note: discount is given on market price and not a required INFORMATION here. not SURE about the answer but hope it works

10.

A shopkeeper allows 10% discount on goodswhen he sells without credit. Cost price of hisgoods is 80% of his selling price. If he sells hisgoods by cash, then his profit is?

Answer»

Answer:

Ans: 25%

Suppose selling price = 100

Then, cost price = 80

Profit = 100-80 = 20

profit percent

=

20

80

×

100

=

25

%

=2080×100=25%

Note: discount is given on market price and not a required INFORMATION here.

not SURE about the answer but hope it works

Discussion

11.	3. Find the angle between hour-hand ar minute hand in a clock at [6 M)a) Ten past elevenb) 2:20c) 10 : 10
Answer» ANSWER: SECOND 2 HAHAHA answer 2.20

11.

3. Find the angle between hour-hand ar minute hand in a clock at [6 M)a) Ten past elevenb) 2:20c) 10 : 10

Answer»

ANSWER:

SECOND 2 HAHAHA answer 2.20

Discussion

12.	(Ans. 1.65 V)15. ABCD is a square of side 0.2 m. Charges of 2x10-9,4 x 10-9,8 x 10-C are placed at the corners A, Band C respectively. Calculate the work required totransfer a charge of 2 x 10°C from D to the centre oof the square.[Karnataka 88](Ans. 6.27 x 10-71)
Answer» Answer: The cell WALL is MADE of silica. Due to the siliceous nature of the cell wall, it is KNOWN as diatomaceous earth. This diatomaceous earth is a whitish, soft, chemically inert, highly absorbant and fire proof substance. It is used in FILTRATION of oils, sugars, and for other INDUSTRIAL purposes.

12.

(Ans. 1.65 V)15. ABCD is a square of side 0.2 m. Charges of 2x10-9,4 x 10-9,8 x 10-C are placed at the corners A, Band C respectively. Calculate the work required totransfer a charge of 2 x 10°C from D to the centre oof the square.[Karnataka 88](Ans. 6.27 x 10-71)

Answer»

Answer:

The cell WALL is MADE of silica. Due to the siliceous nature of the cell wall, it is KNOWN as diatomaceous earth. This diatomaceous earth is a whitish, soft, chemically inert, highly absorbant and fire proof substance. It is used in FILTRATION of oils, sugars, and for other INDUSTRIAL purposes.

Discussion

13.	406. ₹ 850 లను నలుగురు పురుషులు, ఐదుగురు స్త్రీలుమరియు ఆరుగురు బాలుర మధ్య 9 : 8:4 నిష్పత్తిలోభాగాలు చేసారు. స్త్రీల యొక్క భాగం ఎంత?(1) 62(2)64(3)66(4) 68
Answer» ANSWER: 1) is the answer I think Step-by-step EXPLANATION: PLEASE MARK me as BRAINLIST answer please please please

13.

406. ₹ 850 లను నలుగురు పురుషులు, ఐదుగురు స్త్రీలుమరియు ఆరుగురు బాలుర మధ్య 9 : 8:4 నిష్పత్తిలోభాగాలు చేసారు. స్త్రీల యొక్క భాగం ఎంత?(1) 62(2)64(3)66(4) 68

Answer»

ANSWER:

1) is the answer I think

Step-by-step EXPLANATION:

PLEASE MARK me as BRAINLIST answer please please please

Discussion

14.	1. Write the largest and the smallest 8-digit numberand also find how many numbers lie betweenthese two numbers.atbomollamy 11h
Answer» Answer: 11111111 is the SMALLEST LETTER BRO

14.

1. Write the largest and the smallest 8-digit numberand also find how many numbers lie betweenthese two numbers.atbomollamy 11h

Answer»

Answer:

11111111 is the SMALLEST LETTER BRO

Discussion

15.	Solve the simultaneous equation X+y=-2Y=x-8
Answer» Answer: X = 3 and Y = - 5 Step-by-step EXPLANATION: HOPE you LIKE the answer

15.

Solve the simultaneous equation X+y=-2Y=x-8

Answer»

Answer:

X = 3 and Y = - 5

Step-by-step EXPLANATION:

HOPE you LIKE the answer

Discussion

16.	Calculateupto 4 decimals using longdivision method
Answer» ANSWER: lollllllllllllolllllllll.lolllllll.lolllllllll.tooooo

16.

Calculateupto 4 decimals using longdivision method

Answer»

ANSWER:

lollllllllllllolllllllll.lolllllll.lolllllllll.tooooo

Discussion

17.	Which of the following is a Surd?i. √4 ii. √25/9iii.3^√11iv. 3^√8also please tell me how is it a surd?
Answer» ANSWER: i. √4 is your answer.............................................

17.

Which of the following is a Surd?i. √4 ii. √25/9iii.3^√11iv. 3^√8also please tell me how is it a surd?

Answer»

ANSWER:

i. √4 is your answer.............................................

Discussion

18.	√9 is ....... number1) neither rational nor irrational2)rational3) irrational4)none of these
Answer» Answer: 2) rational Step-by-step EXPLANATION: $\sqrt{9} = 3$

18.

√9 is ....... number1) neither rational nor irrational2)rational3) irrational4)none of these

Answer»

Answer:

2) rational

Step-by-step EXPLANATION:

$\sqrt{9} = 3$

Discussion

19.	M)/164-6).-6. :)and C=Dand I is the unit matrix of order 2, then showthata) ABC=1b) AB - BA --.C.
Answer» ANSWER: 17 d is the CORRECT answer

19.

M)/164-6).-6. :)and C=Dand I is the unit matrix of order 2, then showthata) ABC=1b) AB - BA --.C.

Answer»

ANSWER:

17 d is the CORRECT answer

Discussion

20.	4. Write five pairs of integers (a, b) such that a = b = -3. One such pair is (6,-2)because 6+(-2)=(-3).
Answer» What do you MEAN I don’t GET it. But this is the ANSWER I GUESS (-2-3) = 5

Discussion

21.	II. 1. Find the equation of the common tangent of the following circles at their point of contact(i) x2 + y2 + 10x – 2y + 22 = 0, x2 + y2 + 2x – 8y + 8 = 0(ii) x2 + y2 - 8y - 4 = 0, x2 + y2 – 2x – 4y = 0+
Answer» SOLUTION TO DETERMINE The equation of the common tangent of the following circles at their point of contact (i) x² + y² + 10x – 2y + 22 = 0 x² + y² + 2x – 8y + 8 = 0 (ii) x² + y² - 8y - 4 = 0 x² + y² – 2x – 4y = 0 EVALUATION (i) Here the given equation of the circles x² + y² + 10x – 2y + 22 = 0 x² + y² + 2x – 8y + 8 = 0 The equation of the conic passing through the circles x² + y² + 10x – 2y + 22 + k ( x² + y² + 2x – 8y + 8 ) = 0 ⇒ (1 + k) (x² + y²) + ( 10 + 2k)x - ( 2+8k)y + (22+8k) = 0 Since the above equation represents equation of a line So coefficient of x² = coefficient of y² = 0 ∴ 1 + k = 0 ⇒ k = - 1 So the required equation of tangent is OBTAINED by replacing k by - 1 Hence equation of the common tangent of the circles at their point of contact 8x + 6y + 14 = 0 ⇒ 4x + 3y + 7 = 0 (ii) Here the given equation of the circles x² + y² - 8y - 4 = 0 x² + y² – 2x – 4y = 0 Hence equation of the common tangent of the circles at their point of contact - 6x + 4y - 4 = 0 ⇒ 3x - 2y + 2 = 0 ━━━━━━━━━━━━━━━━ Learn more from Brainly :- $1.$ Find the SLOPE of the chord of parabola y^2=4x whose midpoint is (1,1). Help with explanation brainly.in/question/13409021 2. The length of the latus rectum of the parabola 13[(x-3)^2+(y-4)^2 )= (2x-3y+ 5)^2 is brainly.in/question/24980361 3. A hyperbola has its center at (3, 4), a VERTEX at the point (9, 4), and the length of its latus rectum is 3 units. An ex... brainly.in/question/30210645

21.

II. 1. Find the equation of the common tangent of the following circles at their point of contact(i) x2 + y2 + 10x – 2y + 22 = 0, x2 + y2 + 2x – 8y + 8 = 0(ii) x2 + y2 - 8y - 4 = 0, x2 + y2 – 2x – 4y = 0+

Answer»

SOLUTION

TO DETERMINE

The equation of the common tangent of the following circles at their point of contact

(i) x² + y² + 10x – 2y + 22 = 0

x² + y² + 2x – 8y + 8 = 0

(ii) x² + y² - 8y - 4 = 0

x² + y² – 2x – 4y = 0

EVALUATION

(i) Here the given equation of the circles

x² + y² + 10x – 2y + 22 = 0

x² + y² + 2x – 8y + 8 = 0

The equation of the conic passing through the circles

x² + y² + 10x – 2y + 22 + k ( x² + y² + 2x – 8y + 8 ) = 0

⇒ (1 + k) (x² + y²) + ( 10 + 2k)x - ( 2+8k)y + (22+8k) = 0

Since the above equation represents equation of a line

So coefficient of x² = coefficient of y² = 0

∴ 1 + k = 0

⇒ k = - 1

So the required equation of tangent is OBTAINED by replacing k by - 1

Hence equation of the common tangent of the circles at their point of contact

8x + 6y + 14 = 0

⇒ 4x + 3y + 7 = 0

(ii) Here the given equation of the circles

x² + y² - 8y - 4 = 0

x² + y² – 2x – 4y = 0

Hence equation of the common tangent of the circles at their point of contact

- 6x + 4y - 4 = 0

⇒ 3x - 2y + 2 = 0

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ Find the SLOPE of the chord of parabola y^2=4x whose midpoint is (1,1). Help with explanation

brainly.in/question/13409021

2. The length of the latus rectum of the parabola

13[(x-3)^2+(y-4)^2 )= (2x-3y+ 5)^2 is

brainly.in/question/24980361

3. A hyperbola has its center at (3, 4), a VERTEX at the point (9, 4), and the length of its latus rectum is 3 units. An ex...

brainly.in/question/30210645

Discussion

22.	18. Total of all the item / number of 18 समूह के सभीसंख्या =item=(A) Mean(A) औसत(B) Mode(B) बहुलक(C) Median(C) माध्यक(D) Quartiles(D) चतुर्थक
Answer» ANSWER: MODE ✌✌✌✌ according to me

22.

18. Total of all the item / number of 18 समूह के सभीसंख्या =item=(A) Mean(A) औसत(B) Mode(B) बहुलक(C) Median(C) माध्यक(D) Quartiles(D) चतुर्थक

Answer»

ANSWER:

MODE ✌✌✌✌

according to me

Discussion

23.	Ex. 3( The area of a circle is 2251 sq. cm.Find the length of its arc subtending an angleof 120° at the centre. Also find the area ofthe corresponding sector.
Answer» Answer: 577 is Ans plz FOLLOW me

23.

Ex. 3( The area of a circle is 2251 sq. cm.Find the length of its arc subtending an angleof 120° at the centre. Also find the area ofthe corresponding sector.

Answer»

Answer:

577 is Ans

plz FOLLOW me

Discussion

24.	7. Anshul bought 5 fies for Rs 400 and sold 4 ties for Rs 400, find the gain per cent.8. Aryan bought one dozen oranges for Rs 30 and sold 10 oranges for Rs 30, find his profit per cent
Answer» Step-by-step explanation: 7)bought TIES 5 price =400 PER price=₹ 80 sold 4 ties =400 sold per ₹100 100-80/100 ×100 = 20% gain percent =20% 8) 1 dozen = ₹30 12 oranges = ₹30 1 oranges ₹2.5 sold TEN oranges =₹30 it means per price ₹3 3-2.5/10 ×100 = 20%

24.

7. Anshul bought 5 fies for Rs 400 and sold 4 ties for Rs 400, find the gain per cent.8. Aryan bought one dozen oranges for Rs 30 and sold 10 oranges for Rs 30, find his profit per cent

Answer»

Step-by-step explanation:

7)bought TIES 5 price =400 PER price=₹ 80

sold 4 ties =400 sold per ₹100

100-80/100 ×100 = 20%

gain percent =20%

8) 1 dozen = ₹30

12 oranges = ₹30

1 oranges ₹2.5

sold TEN oranges =₹30

it means per price ₹3

3-2.5/10 ×100 = 20%

Discussion

25.	If a and b are two whole numbers , then which of the following statement is not correct ?1) a+b =b+a 2) ab =ba 3) a-b = b-a 4) none of these
Answer» Answer: 1) a+b=b+a hope this HELPS you!!! PLEASE MARK as BRAINLEIST!!

25.

If a and b are two whole numbers , then which of the following statement is not correct ?1) a+b =b+a 2) ab =ba 3) a-b = b-a 4) none of these

Answer»

Answer:

1) a+b=b+a

hope this HELPS you!!!

PLEASE MARK as BRAINLEIST!!

Discussion

26.	One third of herd of deer are grazing in the field as three fourths of the remaining are playing nearby .The rest 8 are drinking water from the pond .find the number of deer
Answer» Step-by-step explanation: GIVEN: 1/3 herd of DEER GRAZING in the field. 3/4 of remaining are playing nearby. And REST 8 are drinking water. To find: the number of deer. Answer: LET the total number of deer in the herd be n. Then, the number of deer grazing in the field be n/3. Also, the 3/4 of the remaining ( i. e., n - n/3 = 2n/3 ) are playing nearby. So, their number is 3/4× 2n/3 = n/2 so, the rest number of deer = n - n/3 - n/2= n/6 According to question, the rest number of deer is 8. => n / 6 = 8 => n = 8×6 => n= 48 Thus, the number of deer in the herd is 48 .

26.

One third of herd of deer are grazing in the field as three fourths of the remaining are playing nearby .The rest 8 are drinking water from the pond .find the number of deer

Answer»

Step-by-step explanation:

GIVEN:

1/3 herd of DEER GRAZING in the field.
3/4 of remaining are playing nearby.
And REST 8 are drinking water.

To find:

the number of deer.

Answer:

LET the total number of deer in the herd be n.

Then, the number of deer grazing in the field be n/3.

Also, the 3/4 of the remaining ( i. e., n - n/3 = 2n/3 ) are

playing nearby.

So, their number is 3/4× 2n/3 = n/2

so, the rest number of deer = n - n/3 - n/2= n/6

According to question,

the rest number of deer is 8.

=> n / 6 = 8

=> n = 8×6

=> n= 48

Thus, the number of deer in the herd is 48 .

Discussion

27.	7. Find the square root of the following correctto 3 decimal places.45.34 (ii) 3.0082 (iii) 65.78(iv) 7.9806 (v) 0.0897 please answersl this question correctly send me a pic
Answer» ANSWER: 6.733 , 1.734 , 8.110 , 2.824 , 0.299 these are the ANSWERS

27.

7. Find the square root of the following correctto 3 decimal places.45.34 (ii) 3.0082 (iii) 65.78(iv) 7.9806 (v) 0.0897 please answersl this question correctly send me a pic

Answer»

ANSWER:

6.733 , 1.734 , 8.110 , 2.824 , 0.299

these are the ANSWERS

Discussion

28.	10. There are 120 girls and 57 boys in a school. If5% of the girls leave and no new pupils are admitted, whatpercentage of the whole school will be boys?
Answer» ANSWER: HI FRIEND Hope this answer helps you Answer. 33.33% of boys are there in the school

28.

10. There are 120 girls and 57 boys in a school. If5% of the girls leave and no new pupils are admitted, whatpercentage of the whole school will be boys?

Answer»

ANSWER:

HI FRIEND

Hope this answer helps you

Answer. 33.33% of boys are there in the school

Discussion

29.	The ratio of ages of Kunal and Deepesh is 3:5. After 10 years this ratio becomes 5:7.What is the present age of Deepesh ? (A) 20 years(B) 25 years(C) 50 years(D) 15 years
Answer» SOLUTION : Let KUNAL's AGE be 3x and Deepesh's age be 5x After 10 years : • Kunal's age = 3x + 10 and • Deepesh's age = 5x + 10 According to the QUESTION : $\longrightarrow \sf \: \dfrac{3x + 10}{5x + 10} = \dfrac{5}{7}$ $\longrightarrow \sf \: 7(3x + 10) = 5(5x + 10)$ $\longrightarrow \sf \: 21x + 70 = 25x + 50$ $\longrightarrow \sf \: 21x - 25x = 50 - 70$ $\longrightarrow \sf \: - 4x = - 20$ $\longrightarrow \sf \: x = \dfrac{20}{4}$ $\longrightarrow \sf \: x = 5 \: years$ $\therefore$ Present age of Deepesh = 5x = 5(5) = 25 years.

29.

The ratio of ages of Kunal and Deepesh is 3:5. After 10 years this ratio becomes 5:7.What is the present age of Deepesh ? (A) 20 years(B) 25 years(C) 50 years(D) 15 years

Answer»

SOLUTION :

Let KUNAL's AGE be 3x and Deepesh's age be 5x

After 10 years :

• Kunal's age = 3x + 10 and

• Deepesh's age = 5x + 10

According to the QUESTION :

$\longrightarrow \sf \: \dfrac{3x + 10}{5x + 10} = \dfrac{5}{7}$

$\longrightarrow \sf \: 7(3x + 10) = 5(5x + 10)$

$\longrightarrow \sf \: 21x + 70 = 25x + 50$

$\longrightarrow \sf \: 21x - 25x = 50 - 70$

$\longrightarrow \sf \: - 4x = - 20$

$\longrightarrow \sf \: x = \dfrac{20}{4}$

$\longrightarrow \sf \: x = 5 \: years$

$\therefore$ Present age of Deepesh = 5x = 5(5) = 25 years.

Discussion

30.	Amount1030.00160.00104.0018.00135.0075.0075.00290.00708.00230.0095.0096.00155.0038.00216.0029.0066.00240.0053.00116.00276.0075.0016.0050.0050.00450.00110.0063.00110.00128.00102.00111.00
Answer» This is INVALID QUESTION PLEASE TRY again.

Discussion

31.	The radius of a circle was increased by 1% the percentage increased in the area is1)12)23)2.014)1.01
Answer» WHOLE CIRCLE IS INCREASED BY 1/100 SO IT WILL BE 0.01 AS ANSWER IS 4) 1.01 MARK ME AS BRAINLIST PLEASE

31.

The radius of a circle was increased by 1% the percentage increased in the area is1)12)23)2.014)1.01

Answer»

WHOLE CIRCLE IS INCREASED BY 1/100 SO IT WILL BE 0.01

AS ANSWER IS

4) 1.01

MARK ME AS BRAINLIST PLEASE

Discussion

32.	Al The histogram gives marksis English of 40 marks studentsclassa)what is the class sizeb) how many students got 80%or more than 80% marksC) what is the range of marksin which the maximum number of students got markd) what is the range of marks in which the maximum numberof students gat mark?و(d) What is the range of marks in which the maximum number of students gotmarks
Answer» ANSWER: Step-by-step EXPLANATION:

32.

Al The histogram gives marksis English of 40 marks studentsclassa)what is the class sizeb) how many students got 80%or more than 80% marksC) what is the range of marksin which the maximum number of students got markd) what is the range of marks in which the maximum numberof students gat mark?و(d) What is the range of marks in which the maximum number of students gotmarks

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

33.	The marked price of an article is 25% above the cost price.By what percent the cost price is less than the marked price?
Answer» Step-by-step EXPLANATION: PLEASE MARK as BRAINLIEST

33.

The marked price of an article is 25% above the cost price.By what percent the cost price is less than the marked price?

Answer»

Step-by-step EXPLANATION:

PLEASE MARK as BRAINLIEST

Discussion

34.	How many 6 digit numbers can be formed ifi) 1st digit is 5 and 3rd digit is 3ii) number should not be divisible by 9
Answer» ANSWER: ...........................…

34.

How many 6 digit numbers can be formed ifi) 1st digit is 5 and 3rd digit is 3ii) number should not be divisible by 9

Answer»

ANSWER:

...........................…

Discussion

35.	Mukesh has some goats and hens in his shed. Upon counting, Mukesh found that the total number of legs is112 and the total number of heads in 40. Find the number of hens in his shed
Answer» Answer: Let the number of goat is g and number of hen is h A/q counting head g+h = 40___(1) counting legs and 4g +2h = 112 ⇒2g +h = 56___(2) subtracting (1) and (2),we get g = 16 so, h = 40-16 = 24 ∴number of goat is 16 and number of hen is 24 Step-by-step EXPLANATION: mark me BRAINLIEST

35.

Mukesh has some goats and hens in his shed. Upon counting, Mukesh found that the total number of legs is112 and the total number of heads in 40. Find the number of hens in his shed

Answer»

Answer:

Let the number of goat is g

and number of hen is h

A/q

counting head

g+h = 40___(1)

counting legs

and 4g +2h = 112

⇒2g +h = 56___(2)

subtracting (1) and (2),we get

g = 16

so, h = 40-16 = 24

∴number of goat is 16 and number of hen is 24

Step-by-step EXPLANATION:

mark me BRAINLIEST

Discussion

36.	Gus.4.hunut23match the column ...Jabalharthe lifeline of Madhya PradeshAmarkantak origin4 Sethani thatVidhyanchal hairHi5 요
Answer» I LIKE uuuuuuuuuuuuuuu

Discussion

37.	I find thenature of the roots ofthe quadratic equation ex C32x cx-3) + 3 = 0 . If the dooroots exist, find them.hay2x (n-3) +3 20
Answer» ANSWER: ARON BRO you are so CHITTER

37.

I find thenature of the roots ofthe quadratic equation ex C32x cx-3) + 3 = 0 . If the dooroots exist, find them.hay2x (n-3) +3 20

Answer»

ANSWER:

ARON BRO you are so

CHITTER

Discussion

38.	Use the False position method to find solutions accurate towithin 10-5 for the function 3x - e x = 0 in 1 ≤ ≤ 2.
Answer» 3x - e, x = 0 in 1 < < 2 Your ANSWER is 0

38.

Use the False position method to find solutions accurate towithin 10-5 for the function 3x - e x = 0 in 1 ≤ ≤ 2.

Answer»

3x - e, x = 0 in 1 < < 2

Your ANSWER is 0

Discussion

39.	Distance of the point (4,5)from origin isa) √41 unit b)√35 unit c) √62 unit d)√79 unitclass 10th
Answer» Step-by-step EXPLANATION: DISTANCE between (0,0)& ( 4,5) is = √ 16 + 25 = √ 41 unit ........ distance between two points is = √ (x1- X2 )^2 + (y1-y2)^2

39.

Distance of the point (4,5)from origin isa) √41 unit b)√35 unit c) √62 unit d)√79 unitclass 10th

Answer»

Step-by-step EXPLANATION:

DISTANCE between (0,0)& ( 4,5) is

= √ 16 + 25 = √ 41 unit ........

distance between two points is

= √ (x1- X2 )^2 + (y1-y2)^2

Discussion

40.	3) Divide Rs. 4160 among A, B and C such that 2A=3B=4C.A The sides of a triangle are in the ratio 3:5:7 and its perimeter is 75cm. F
Answer» Answer: 3) 2+3+4 = 9 A = 2/9×4160 = ₹924.44 B = 3/9×4160 = ₹1386.66 C = 4/9×4160 = ₹1848.88

40.

3) Divide Rs. 4160 among A, B and C such that 2A=3B=4C.A The sides of a triangle are in the ratio 3:5:7 and its perimeter is 75cm. F

Answer»

Answer:

3) 2+3+4 = 9

A = 2/9×4160 = ₹924.44

B = 3/9×4160 = ₹1386.66

C = 4/9×4160 = ₹1848.88

Discussion

41.	Question No. 1.If a and B are the roots of the equation (p+1) tan’x-2x tan x = l-p and tan' (a+b)= 50. thenthe value of is equal to
Answer» Answer: LET α,β be the distinct POSITIVE roots of the equation tanx=2x,then FIND ∫10sinαxsinβxdx,independent of α and β.

41.

Question No. 1.If a and B are the roots of the equation (p+1) tan’x-2x tan x = l-p and tan' (a+b)= 50. thenthe value of is equal to

Answer»

Answer:

LET α,β be the distinct POSITIVE roots of the equation tanx=2x,then FIND ∫10sinαxsinβxdx,independent of α and β.

Discussion

42.	Lessons - 1 to 4CLOSEExam: Lessons - 1 to 4Date: 2020-09-21Total Questions: 25PREVIOUSNEXTQuestion 15:An animal found in the Arctic region. It can swimwell and run very fast.ar
Answer» ANSWER: POLAR Bear. It can run FAST for CATCHING preys . It can swim in WATER too. It is found in Arctic region.

42.

Lessons - 1 to 4CLOSEExam: Lessons - 1 to 4Date: 2020-09-21Total Questions: 25PREVIOUSNEXTQuestion 15:An animal found in the Arctic region. It can swimwell and run very fast.ar

Answer»

ANSWER:

POLAR Bear.

It can run FAST for CATCHING preys .

It can swim in WATER too.

It is found in Arctic region.

Discussion

43.	14. ਹੇਠਾਂ ਦਿੱਤੇ ਚਿੱਤਰ ਦੁਆਰਾ ਦਰਸਾਈ ਗਈ ਸਮੀਕਰਣਕਿਹੜੀ ਹੋਵੇਗੀ, ਜੇਕਰ ਪੂਰੇ ਚਿੱਤਰ ਨੂੰ 1 ਪੂਰਨ ਮੰਨਿਆ ਜਾਵੇ।Choose the equation represented by thefollowing diagram. The entire diagramrepresents 1 as Whole. Area 1 GRIदर्शाया गया व्यंजक कौन सा होगा, अगर पूरे चित्र को एकਧਿ ਸਾਗ ਗਉ।*?so225++6
Answer» ANSWER: what DUDE SORRY about the LANGUAGE sorry sorry sorry sorry

43.

14. ਹੇਠਾਂ ਦਿੱਤੇ ਚਿੱਤਰ ਦੁਆਰਾ ਦਰਸਾਈ ਗਈ ਸਮੀਕਰਣਕਿਹੜੀ ਹੋਵੇਗੀ, ਜੇਕਰ ਪੂਰੇ ਚਿੱਤਰ ਨੂੰ 1 ਪੂਰਨ ਮੰਨਿਆ ਜਾਵੇ।Choose the equation represented by thefollowing diagram. The entire diagramrepresents 1 as Whole. Area 1 GRIदर्शाया गया व्यंजक कौन सा होगा, अगर पूरे चित्र को एकਧਿ ਸਾਗ ਗਉ।*?so225++6

Answer»

ANSWER:

what DUDE SORRY about the LANGUAGE sorry sorry sorry sorry

Discussion

44.	Mr.Joshi burrowed a sum of rs15000 from Mr.bhatta at the rate of 15% per year Calculate the amount received by Mr. Bhatta in 10 months.Step by Step please
Answer» Step-by-step explanation: PRINCIPAL: Rs.15000 Rate of Interest = 15% p.a Time/No.of years = 10/12 yrs SIMPLE Interest = PTR/100 = (15000 × 10/12 × 15)/100 = Rs. 1875 AMOUNT = Principal + Simple Interest = 15000 + 1875 = Rs. 16875

44.

Mr.Joshi burrowed a sum of rs15000 from Mr.bhatta at the rate of 15% per year Calculate the amount received by Mr. Bhatta in 10 months.Step by Step please

Answer»

Step-by-step explanation:

PRINCIPAL: Rs.15000

Rate of Interest = 15% p.a

Time/No.of years = 10/12 yrs

SIMPLE Interest = PTR/100

= (15000 × 10/12 × 15)/100

= Rs. 1875

AMOUNT = Principal + Simple Interest

= 15000 + 1875

= Rs. 16875

Discussion

45.	STU1 लघुत्तम समापवर्त्य एवं महत्तम समापवर्तक15सहायक गुणनफल 1000 है तथा ल.स. 168 हो. तो म.स. कितना होगा?क
Answer» ANSWER: PLZ WRITE QUESTIONS in ENGLISH

45.

STU1 लघुत्तम समापवर्त्य एवं महत्तम समापवर्तक15सहायक गुणनफल 1000 है तथा ल.स. 168 हो. तो म.स. कितना होगा?क

Answer»

ANSWER:

PLZ WRITE QUESTIONS in ENGLISH

Discussion

46.	5. In the given figure, POQ is a straight line. The value of x is:(a) 16°(6) 17.5°(c) 19.5°(d) 21°5%Р
Answer» ANSWER: it's incomplete question Step-by-step EXPLANATION: please GIVE US full questions

46.

5. In the given figure, POQ is a straight line. The value of x is:(a) 16°(6) 17.5°(c) 19.5°(d) 21°5%Р

Answer»

ANSWER:

it's incomplete question

Step-by-step EXPLANATION:

please GIVE US full questions

Discussion

47.	A train travel a distance with a speed of 40km/hr and return with a speed of 60km/hr. Calculate the avarage speed of train
Answer» Answer: AVERAGE speed = Total distance/Total TIME = 40+60/1+1 = 100/2 = 50 Average speed is 50KM per HOUR

47.

A train travel a distance with a speed of 40km/hr and return with a speed of 60km/hr. Calculate the avarage speed of train

Answer»

Answer:

AVERAGE speed = Total distance/Total TIME

= 40+60/1+1

= 100/2

= 50

Average speed is 50KM per HOUR

Discussion

48.	If the line 3x – 4y + 7 = 0 and 2+ ky + 5 = 0 are perpendicularto each other, then the value ofkis *
Answer» ANSWER: answer for the GIVEN PROBLEM is given

48.

If the line 3x – 4y + 7 = 0 and 2+ ky + 5 = 0 are perpendicularto each other, then the value ofkis *

Answer»

ANSWER:

answer for the GIVEN PROBLEM is given

Discussion

49.	Find the coordinates of the point which divides the line joining the points(1, 6) and (4, 3) in the ratio 1:2
Answer» Answer: The section formula TELLS us the COORDINATES of the point which divides a given line segment into two parts such that their lengths are in the ratio m : n m:n m:n. The MIDPOINT of a line segment is the point that divides a line segment in two equal HALVES.

49.

Find the coordinates of the point which divides the line joining the points(1, 6) and (4, 3) in the ratio 1:2

Answer»

Answer:

The section formula TELLS us the COORDINATES of the point which divides a given line segment into two parts such that their lengths are in the ratio m : n m:n m:n. The MIDPOINT of a line segment is the point that divides a line segment in two equal HALVES.

Discussion

50.	In an equilateral triangle ABC, if AD ꓕ BC, then AD2 =(a)CD2(b) 2CD2(c) 3CD2(d) 4CD2
Answer» ANSWER: (a)CD2 This is the answer PLZ MARK as BRILLIANT

50.

In an equilateral triangle ABC, if AD ꓕ BC, then AD2 =(a)CD2(b) 2CD2(c) 3CD2(d) 4CD2

Answer»

ANSWER:

(a)CD2

This is the answer PLZ MARK as BRILLIANT

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If a and b are two whole numbers Which of the following numbers is composite ?•5•19•71•85​

State which of them is not correcta. 5 is not zero of x+5b. 3 is zero of x-3c. 2/5 is zero of 5x+2d. - 3/2 is zero of 2x+3

Solve the following equationa)6z+10=-21

A hundred rupee note was changed to ten rupee notes and twenty rupees notes ,8 notes in total.How many tens and 20s?​

Q:1 Choose the correct answer for adding up -6 and -5.-111-111Q:2 Choose all the correct statements.-5 < 1-6 > -3-4 > -84 < -10Q:3 Which integers will go inside -4 < _____________ > 1

5. एक स्कूटर 1 लीटर पेट्रोल में 35 किमी दूरी तय करता है। 3-लीटर पेट्रोल में यहस्कूटर कुल कितनी दूरी तय करेगा?​

The digit in the ones place of a two digit number is please the digit at the tens place write the number​

ANSWER:

Answer:I can't UNDERSTAND this LANGUAGE. I am in TAMILNADU

SECTION D. LAQ (CARRYING 4 MARKS EACH)38. PORS is a quadrilateral such that PO = PS and RO = Rs. Prove that PR is the perpendicularbisector of QS.39. In the following figure, M and Nare two plane mirrors perpendicular to each other. Shaw​

A shopkeeper allows 10% discount on goodswhen he sells without credit. Cost price of hisgoods is 80% of his selling price. If he sells hisgoods by cash, then his profit is? ​

3. Find the angle between hour-hand ar minute hand in a clock at [6 M)a) Ten past elevenb) 2:20c) 10 : 10​

(Ans. 1.65 V)15. ABCD is a square of side 0.2 m. Charges of 2x10-9,4 x 10-9,8 x 10-C are placed at the corners A, Band C respectively. Calculate the work required totransfer a charge of 2 x 10°C from D to the centre oof the square.[Karnataka 88](Ans. 6.27 x 10-71)​

1. Write the largest and the smallest 8-digit numberand also find how many numbers lie betweenthese two numbers.atbomollamy 11h​

Solve the simultaneous equation X+y=-2Y=x-8

Calculateupto 4 decimals using longdivision method​

Which of the following is a Surd?i. √4 ii. √25/9iii.3^√11iv. 3^√8also please tell me how is it a surd? ​

√9 is ....... number1) neither rational nor irrational2)rational3) irrational4)none of these​

M)/164-6).-6. :)and C=Dand I is the unit matrix of order 2, then showthata) ABC=1b) AB - BA --.C.​

4. Write five pairs of integers (a, b) such that a = b = -3. One such pair is (6,-2)because 6+(-2)=(-3).​

II. 1. Find the equation of the common tangent of the following circles at their point of contact(i) x2 + y2 + 10x – 2y + 22 = 0, x2 + y2 + 2x – 8y + 8 = 0(ii) x2 + y2 - 8y - 4 = 0, x2 + y2 – 2x – 4y = 0+​

SOLUTION

18. Total of all the item / number of 18 समूह के सभीसंख्या =item=(A) Mean(A) औसत(B) Mode(B) बहुलक(C) Median(C) माध्यक(D) Quartiles(D) चतुर्थक​

MODE ✌✌✌✌

according to me

Ex. 3( The area of a circle is 2251 sq. cm.Find the length of its arc subtending an angleof 120° at the centre. Also find the area ofthe corresponding sector.​

7. Anshul bought 5 fies for Rs 400 and sold 4 ties for Rs 400, find the gain per cent.8. Aryan bought one dozen oranges for Rs 30 and sold 10 oranges for Rs 30, find his profit per cent​

If a and b are two whole numbers , then which of the following statement is not correct ?1) a+b =b+a 2) ab =ba 3) a-b = b-a 4) none of these ​

One third of herd of deer are grazing in the field as three fourths of the remaining are playing nearby .The rest 8 are drinking water from the pond .find the number of deer​

GIVEN:

To find:

Answer:

7. Find the square root of the following correctto 3 decimal places.45.34 (ii) 3.0082 (iii) 65.78(iv) 7.9806 (v) 0.0897 please answersl this question correctly send me a pic​

6.733 , 1.734 , 8.110 , 2.824 , 0.299

these are the ANSWERS

10. There are 120 girls and 57 boys in a school. If5% of the girls leave and no new pupils are admitted, whatpercentage of the whole school will be boys?​

The ratio of ages of Kunal and Deepesh is 3:5. After 10 years this ratio becomes 5:7.What is the present age of Deepesh ? (A) 20 years(B) 25 years(C) 50 years(D) 15 years​

SOLUTION :

Amount1030.00160.00104.0018.00135.0075.0075.00290.00708.00230.0095.0096.00155.0038.00216.0029.0066.00240.0053.00116.00276.0075.0016.0050.0050.00450.00110.0063.00110.00128.00102.00111.00​

The radius of a circle was increased by 1% the percentage increased in the area is1)12)23)2.014)1.01​

The marked price of an article is 25% above the cost price.By what percent the cost price is less than the marked price?

How many 6 digit numbers can be formed ifi) 1st digit is 5 and 3rd digit is 3ii) number should not be divisible by 9​

Mukesh has some goats and hens in his shed. Upon counting, Mukesh found that the total number of legs is112 and the total number of heads in 40. Find the number of hens in his shed​

Gus.4.hunut23match the column ...Jabalharthe lifeline of Madhya PradeshAmarkantak origin4 Sethani thatVidhyanchal hairHi5 요​

I find thenature of the roots ofthe quadratic equation ex C32x cx-3) + 3 = 0 . If the dooroots exist, find them.hay2x (n-3) +3 20​

Use the False position method to find solutions accurate towithin 10-5 for the function 3x - e x = 0 in 1 ≤ ≤ 2.​

Distance of the point (4,5)from origin isa) √41 unit b)√35 unit c) √62 unit d)√79 unitclass 10th ​

3) Divide Rs. 4160 among A, B and C such that 2A=3B=4C.A The sides of a triangle are in the ratio 3:5:7 and its perimeter is 75cm. F​

Question No. 1.If a and B are the roots of the equation (p+1) tan’x-2x tan x = l-p and tan' (a+b)= 50. thenthe value of is equal to​

Lessons - 1 to 4CLOSEExam: Lessons - 1 to 4Date: 2020-09-21Total Questions: 25PREVIOUSNEXTQuestion 15:An animal found in the Arctic region. It can swimwell and run very fast.ar​

Mr.Joshi burrowed a sum of rs15000 from Mr.bhatta at the rate of 15% per year Calculate the amount received by Mr. Bhatta in 10 months.Step by Step please

STU1 लघुत्तम समापवर्त्य एवं महत्तम समापवर्तक15सहायक गुणनफल 1000 है तथा ल.स. 168 हो. तो म.स. कितना होगा?क​

5. In the given figure, POQ is a straight line. The value of x is:(a) 16°(6) 17.5°(c) 19.5°(d) 21°5%Р​

A train travel a distance with a speed of 40km/hr and return with a speed of 60km/hr. Calculate the avarage speed of train​

If the line 3x – 4y + 7 = 0 and 2+ ky + 5 = 0 are perpendicularto each other, then the value ofkis *​

Find the coordinates of the point which divides the line joining the points(1, 6) and (4, 3) in the ratio 1:2​

In an equilateral triangle ABC, if AD ꓕ BC, then AD2 =(a)CD2(b) 2CD2(c) 3CD2(d) 4CD2

If a and b are two whole numbers Which of the following numbers is composite ?•5•19•71•85

A hundred rupee note was changed to ten rupee notes and twenty rupees notes ,8 notes in total.How many tens and 20s?

5. एक स्कूटर 1 लीटर पेट्रोल में 35 किमी दूरी तय करता है। 3-लीटर पेट्रोल में यहस्कूटर कुल कितनी दूरी तय करेगा?

The digit in the ones place of a two digit number is please the digit at the tens place write the number

SECTION D. LAQ (CARRYING 4 MARKS EACH)38. PORS is a quadrilateral such that PO = PS and RO = Rs. Prove that PR is the perpendicularbisector of QS.39. In the following figure, M and Nare two plane mirrors perpendicular to each other. Shaw

A shopkeeper allows 10% discount on goodswhen he sells without credit. Cost price of hisgoods is 80% of his selling price. If he sells hisgoods by cash, then his profit is?

3. Find the angle between hour-hand ar minute hand in a clock at [6 M)a) Ten past elevenb) 2:20c) 10 : 10

(Ans. 1.65 V)15. ABCD is a square of side 0.2 m. Charges of 2x10-9,4 x 10-9,8 x 10-C are placed at the corners A, Band C respectively. Calculate the work required totransfer a charge of 2 x 10°C from D to the centre oof the square.[Karnataka 88](Ans. 6.27 x 10-71)

1. Write the largest and the smallest 8-digit numberand also find how many numbers lie betweenthese two numbers.atbomollamy 11h

Calculateupto 4 decimals using longdivision method

Which of the following is a Surd?i. √4 ii. √25/9iii.3^√11iv. 3^√8also please tell me how is it a surd?

√9 is ....... number1) neither rational nor irrational2)rational3) irrational4)none of these

M)/164-6).-6. :)and C=Dand I is the unit matrix of order 2, then showthata) ABC=1b) AB - BA --.C.

4. Write five pairs of integers (a, b) such that a = b = -3. One such pair is (6,-2)because 6+(-2)=(-3).

II. 1. Find the equation of the common tangent of the following circles at their point of contact(i) x2 + y2 + 10x – 2y + 22 = 0, x2 + y2 + 2x – 8y + 8 = 0(ii) x2 + y2 - 8y - 4 = 0, x2 + y2 – 2x – 4y = 0+

18. Total of all the item / number of 18 समूह के सभीसंख्या =item=(A) Mean(A) औसत(B) Mode(B) बहुलक(C) Median(C) माध्यक(D) Quartiles(D) चतुर्थक

Ex. 3( The area of a circle is 2251 sq. cm.Find the length of its arc subtending an angleof 120° at the centre. Also find the area ofthe corresponding sector.

7. Anshul bought 5 fies for Rs 400 and sold 4 ties for Rs 400, find the gain per cent.8. Aryan bought one dozen oranges for Rs 30 and sold 10 oranges for Rs 30, find his profit per cent

If a and b are two whole numbers , then which of the following statement is not correct ?1) a+b =b+a 2) ab =ba 3) a-b = b-a 4) none of these

One third of herd of deer are grazing in the field as three fourths of the remaining are playing nearby .The rest 8 are drinking water from the pond .find the number of deer

7. Find the square root of the following correctto 3 decimal places.45.34 (ii) 3.0082 (iii) 65.78(iv) 7.9806 (v) 0.0897 please answersl this question correctly send me a pic

10. There are 120 girls and 57 boys in a school. If5% of the girls leave and no new pupils are admitted, whatpercentage of the whole school will be boys?

The ratio of ages of Kunal and Deepesh is 3:5. After 10 years this ratio becomes 5:7.What is the present age of Deepesh ? (A) 20 years(B) 25 years(C) 50 years(D) 15 years

Amount1030.00160.00104.0018.00135.0075.0075.00290.00708.00230.0095.0096.00155.0038.00216.0029.0066.00240.0053.00116.00276.0075.0016.0050.0050.00450.00110.0063.00110.00128.00102.00111.00

The radius of a circle was increased by 1% the percentage increased in the area is1)12)23)2.014)1.01

How many 6 digit numbers can be formed ifi) 1st digit is 5 and 3rd digit is 3ii) number should not be divisible by 9

Mukesh has some goats and hens in his shed. Upon counting, Mukesh found that the total number of legs is112 and the total number of heads in 40. Find the number of hens in his shed

Gus.4.hunut23match the column ...Jabalharthe lifeline of Madhya PradeshAmarkantak origin4 Sethani thatVidhyanchal hairHi5 요

I find thenature of the roots ofthe quadratic equation ex C32x cx-3) + 3 = 0 . If the dooroots exist, find them.hay2x (n-3) +3 20

Use the False position method to find solutions accurate towithin 10-5 for the function 3x - e x = 0 in 1 ≤ ≤ 2.

Distance of the point (4,5)from origin isa) √41 unit b)√35 unit c) √62 unit d)√79 unitclass 10th

3) Divide Rs. 4160 among A, B and C such that 2A=3B=4C.A The sides of a triangle are in the ratio 3:5:7 and its perimeter is 75cm. F

Question No. 1.If a and B are the roots of the equation (p+1) tan’x-2x tan x = l-p and tan' (a+b)= 50. thenthe value of is equal to

Lessons - 1 to 4CLOSEExam: Lessons - 1 to 4Date: 2020-09-21Total Questions: 25PREVIOUSNEXTQuestion 15:An animal found in the Arctic region. It can swimwell and run very fast.ar

STU1 लघुत्तम समापवर्त्य एवं महत्तम समापवर्तक15सहायक गुणनफल 1000 है तथा ल.स. 168 हो. तो म.स. कितना होगा?क

5. In the given figure, POQ is a straight line. The value of x is:(a) 16°(6) 17.5°(c) 19.5°(d) 21°5%Р

A train travel a distance with a speed of 40km/hr and return with a speed of 60km/hr. Calculate the avarage speed of train

If the line 3x – 4y + 7 = 0 and 2+ ky + 5 = 0 are perpendicularto each other, then the value ofkis *

Find the coordinates of the point which divides the line joining the points(1, 6) and (4, 3) in the ratio 1:2