332354 + Interview Questions in Secondary School in Math

1.	Class 9 cbse students maths books which are necessary to solve
Answer» Answer: HLO my NAME is umesh Step-by-step EXPLANATION: how R U

1.

Class 9 cbse students maths books which are necessary to solve

Answer»

Answer:

HLO my NAME is umesh

Step-by-step EXPLANATION:

how R U

Discussion

2.	Express in kg:200 g(explain question why it is possible)
Answer» Answer: 1kg = 1000g 1g =1/1000kg 200g = 1/1000kg = 200/1000kg = 0.2kg

2.

Express in kg:200 g(explain question why it is possible)

Answer»

Answer:

1kg = 1000g

1g =1/1000kg

200g = 1/1000kg

= 200/1000kg

= 0.2kg

Discussion

3.	A ratio had a unit true or false
Answer» ʜᴏʟᴀ♥ Ratio has no units ..so its ''false''. ʜᴏᴘᴇ ᴛʜɪs ʜᴇʟᴘs◉‿◉

3.

A ratio had a unit true or false

Answer»

ʜᴏʟᴀ♥

Ratio has no units ..so its ''false''.

ʜᴏᴘᴇ ᴛʜɪs ʜᴇʟᴘs◉‿◉

Discussion

4.	Sin 60° cos 30° - cos 60° sin 30° =sin 30°
Answer» ANSWER: $sin60 \times cos30 - cos60 \times sin30 \\$ It is in the FORM of $\<klux>SIN</klux>(a) \cos(b) - \cos(a) \sin(b)$ which is EQUAL to Sin (a-b) A= 60 B=30 THEREFORE $\sin(60 - 30) \\ \sin(30)$

4.

Sin 60° cos 30° - cos 60° sin 30° =sin 30°

Answer»

ANSWER:

$sin60 \times cos30 - cos60 \times sin30 \\$

It is in the FORM of

$\<klux>SIN</klux>(a) \cos(b) - \cos(a) \sin(b)$

which is EQUAL to Sin (a-b)

A= 60

B=30

THEREFORE

$\sin(60 - 30) \\ \sin(30)$

Discussion

5.	4. ক্যাম্পে প্যারেড করার সম্য সৈন্যদের বর্গাকারে সাজানাে হলাে ।১ টি সারিতে ১১তমসৈন্য দাঁড়িয়েছে। মােট সৈন্য হবে।উনি =১
Answer» ANSWER: PLEASE TRANSLATE this QUESTION in ENGLISH or in Hindi

5.

4. ক্যাম্পে প্যারেড করার সম্য সৈন্যদের বর্গাকারে সাজানাে হলাে ।১ টি সারিতে ১১তমসৈন্য দাঁড়িয়েছে। মােট সৈন্য হবে।উনি =১

Answer»

ANSWER:

PLEASE TRANSLATE this QUESTION in ENGLISH or in Hindi

Discussion

6.	Say the answer of 10th and last questionplease,please,please,please
Answer» GOOD Evening! 10) 82.325 = (8x10) + (2X1) + 3(1/10) + 2(1/100) + 5 (1/1000)

6.

Say the answer of 10th and last questionplease,please,please,please

Answer»

GOOD Evening!

10) 82.325 = (8x10) + (2X1) + 3(1/10) + 2(1/100) + 5 (1/1000)

Discussion

7.	निम्नलिखित को जोड़िए।-15 में -18 को
Answer» ANSWER: -33 Step-by-step EXPLANATION: HOPE it's HELPFUL.

7.

निम्नलिखित को जोड़िए।-15 में -18 को

Answer»

ANSWER:

-33

Step-by-step EXPLANATION:

HOPE it's HELPFUL.

Discussion

8.	Threesomand Starterthe lading81232Size 6 7 9761913)5
Answer» Step-by-step EXPLANATION: ऐतिहासिक पटल पर गांव रास्तापाल, जिला डूंगरपुर, राजस्थान की पहचान अमर शहीद वीर बाला कालीबाई के नाम से की जाती है। आदिवासी समुदाय भील के सोमा भाई के घर में वीर काली बाई का जन्म जून 1935 में माता नवली की कोख से हुआ।May 7, 2020

8.

Threesomand Starterthe lading81232Size 6 7 9761913)5

Answer»

Step-by-step EXPLANATION:

ऐतिहासिक पटल पर गांव रास्तापाल, जिला डूंगरपुर, राजस्थान की पहचान अमर शहीद वीर बाला कालीबाई के नाम से की जाती है। आदिवासी समुदाय भील के सोमा भाई के घर में वीर काली बाई का जन्म जून 1935 में माता नवली की कोख से हुआ।May 7, 2020

Discussion

9.	Using balance method,solve x-7=12
Answer» ANSWER: x-7=12 or,x=12+7 or,x=19 please MARK me as a BRAINLIEST

9.

Using balance method,solve x-7=12

Answer»

ANSWER:

x-7=12

or,x=12+7

or,x=19

please MARK me as a BRAINLIEST

Discussion

10.	Sunita wants to cover her suitcase with atarpaulin cloth. If it measures 80 cm x40 cm x 25 cm, how many metres oftarpaulin of width 90 cm is required tocover 100 such suitcases?'please answer me in a copy
Answer» Answer: i HOPE it HELPS you PLZ mark me as BRAINLIEST answer

10.

Sunita wants to cover her suitcase with atarpaulin cloth. If it measures 80 cm x40 cm x 25 cm, how many metres oftarpaulin of width 90 cm is required tocover 100 such suitcases?'please answer me in a copy

Answer»

Answer:

i HOPE it HELPS you

PLZ mark me as BRAINLIEST answer

Discussion

11.	If 2x = 3y = 4z, then x:y:z is(a) 6:4:3(b) 5:4:2(c) 2:3:4(d) None of these
Answer» ANSWER: (C) YR answer.............

11.

If 2x = 3y = 4z, then x:y:z is(a) 6:4:3(b) 5:4:2(c) 2:3:4(d) None of these

Answer»

ANSWER:

(C) YR answer.............

Discussion

12.	The students (go) to trip a trip tomorrow
Answer» ANSWER: The STUDENTS (will GO) to a TRIP TOMORROW

12.

The students (go) to trip a trip tomorrow

Answer»

ANSWER:

The STUDENTS (will GO) to a TRIP TOMORROW

Discussion

13.	Posecan starts from P anoif theyin opp. directionJours find their speedsgodirection They meetOmarI places and Q are 250 km afariI from each other on a national Highwafrom Q at the same tone ofin the same directionmeet in 5 hour and if they go in opp direction they meet in 25 / 13 hours .fund speed
Answer» Step-by-step EXPLANATION: hans nahi hai KI is BAR BHI nahi hai ki is bar bhi nahi hai ki is bar bhi nahi hai ki is bar bhi nahi

13.

Posecan starts from P anoif theyin opp. directionJours find their speedsgodirection They meetOmarI places and Q are 250 km afariI from each other on a national Highwafrom Q at the same tone ofin the same directionmeet in 5 hour and if they go in opp direction they meet in 25 / 13 hours .fund speed

Answer»

Step-by-step EXPLANATION:

hans nahi hai KI is BAR BHI nahi hai ki is bar bhi nahi hai ki is bar bhi nahi hai ki is bar bhi nahi

Discussion

14.	5. Prove that Tanh^-1(1/2)=1/2loge^3
Answer» ANSWER: MARK me as brainliest. Step-by-step EXPLANATION:

14.

5. Prove that Tanh^-1(1/2)=1/2loge^3

Answer»

ANSWER:

MARK me as brainliest.

Step-by-step EXPLANATION:

Discussion

15.	The co-ordinates of a point P in 1 pointquadrant I are (8,y). If thedistance of P from origin is 10units, then the value of y isO 2 unitsO 4 uniteO6 unitsO 8units
Answer» $\underline{\underline{\sf{\maltese\:\:Question}}}$ The co-ordinates of a point P lying in Quadrant I are (8 , y). If the distance of P from ORIGIN is 10 units, then the value of y is $\underline{\underline{\sf{\maltese\:\:Given}}}$ The co-ordinates of a point P LYE in Quadrant I The co-ordinates of a point P are (8 , y) Distance of P from origin is 10 units $\underline{\underline{\sf{\maltese\:\:To\:Find}}}$ Value of y $\underline{\underline{\sf{\maltese\:\:Answer}}}$ y = 6 units $\underline{\underline{\sf{\maltese\:\:Calculations}}}$ We know : In FIRST quadrant, both x and y co-ordinate are positive Hence y will have a positive value ________________________________________________________ Distance Between Two Points is given by : $\sf{\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}}$ Note : The Distance of Point P(x₁ , y₁) from Origin O(0,0) is OP = $\sf{\sqrt{x_1\:^2+y_1\:^2}}$ Coming to Question : OP = $\sf{\sqrt{x_1\:^2+y_1\:^2}}$ ⇒ 10 units = $\sf{\sqrt{x_1\:^2+y_1\:^2}}$ ⇒ 10 units = $\sf{\sqrt{8^2+y^2}}$ ⇒ 10 units = $\sf{\sqrt{64+y^2}}$ Squaring On Both Sides ⇒ (10)² units = $\sf{(\sqrt{64+y^2})^2}$ ⇒ 100 units = 64 + y² Subtracting 64 from Both Sides ⇒ 100 units - 64 = 64 + y² - 64 ⇒ 36 units = y² Switch Sides ⇒ y² = 36 units Taking Root on Both Sides ⇒ √y² = ±√36 units ⇒ y = ±√36 units ⇒ y = + 6 units or - 6 units We already came to know y will have a positive value ⇒ y = 6 units $\underline{\underline{\sf{\maltese\:\:Know\:More}}}$ Co-ordinates of the origin is (0, 0). The y-coordinates of every point on X-axis is zero The x-coordinates of every point on Y-axis is zero. Any point on X-axis is of the FORM (x, 0). Any point on Y-axis is of the form (0, y). A line which is parallel to the X-axis is called a horizontal line. On the horizontal line. The y-coordinates of all the point are same. A line which is parallel to the Y-axis is called a vertical line. On vertical line, the x-coordinates of all points are same. ________________________________________________________ Request : If there is any difficulty viewing this answer in app, Kindly see this answer at Web (https://brainly.in/) for clear steps and understanding. See the answer at : brainly.in/question/30531648

15.

The co-ordinates of a point P in 1 pointquadrant I are (8,y). If thedistance of P from origin is 10units, then the value of y isO 2 unitsO 4 uniteO6 unitsO 8units

Answer»

$\underline{\underline{\sf{\maltese\:\:Question}}}$

The co-ordinates of a point P lying in Quadrant I are (8 , y). If the distance of P from ORIGIN is 10 units, then the value of y is

$\underline{\underline{\sf{\maltese\:\:Given}}}$

The co-ordinates of a point P LYE in Quadrant I

The co-ordinates of a point P are (8 , y)

Distance of P from origin is 10 units

$\underline{\underline{\sf{\maltese\:\:To\:Find}}}$

Value of y

$\underline{\underline{\sf{\maltese\:\:Answer}}}$

y = 6 units

$\underline{\underline{\sf{\maltese\:\:Calculations}}}$

We know : In FIRST quadrant, both x and y co-ordinate are positive

Hence y will have a positive value

________________________________________________________

Distance Between Two Points is given by : $\sf{\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}}$

Note : The Distance of Point P(x₁ , y₁) from Origin O(0,0) is OP = $\sf{\sqrt{x_1\:^2+y_1\:^2}}$

Coming to Question :

OP = $\sf{\sqrt{x_1\:^2+y_1\:^2}}$

⇒ 10 units = $\sf{\sqrt{x_1\:^2+y_1\:^2}}$

⇒ 10 units = $\sf{\sqrt{8^2+y^2}}$

⇒ 10 units = $\sf{\sqrt{64+y^2}}$

Squaring On Both Sides

⇒ (10)² units = $\sf{(\sqrt{64+y^2})^2}$

⇒ 100 units = 64 + y²

Subtracting 64 from Both Sides

⇒ 100 units - 64 = 64 + y² - 64

⇒ 36 units = y²

Switch Sides

⇒ y² = 36 units

Taking Root on Both Sides

⇒ √y² = ±√36 units

⇒ y = ±√36 units

⇒ y = + 6 units or - 6 units

We already came to know y will have a positive value

⇒ y = 6 units

$\underline{\underline{\sf{\maltese\:\:Know\:More}}}$

Co-ordinates of the origin is (0, 0).

The y-coordinates of every point on X-axis is zero

The x-coordinates of every point on Y-axis is zero.

Any point on X-axis is of the FORM (x, 0).

Any point on Y-axis is of the form (0, y).

A line which is parallel to the X-axis is called a horizontal line. On the horizontal line. The y-coordinates of all the point are same.

A line which is parallel to the Y-axis is called a vertical line. On vertical line, the x-coordinates of all points are same.

________________________________________________________

Request :

If there is any difficulty viewing this answer in app, Kindly see this answer at Web (https://brainly.in/) for clear steps and understanding.

See the answer at :

brainly.in/question/30531648

Discussion

16.	Is 4.4inch o\|\|o smaller for 16 yr
Answer» YEES DEFINITELY it is SMALLER!!

Discussion

17.	Factorise m*2+5m+6
Answer» Step-by-step EXPLANATION: please open the full pic, and if U have any issue please ASK me in massage. HOPE it helps u

17.

Factorise m*2+5m+6

Answer»

Step-by-step EXPLANATION:

please open the full pic,

and if U have any issue please ASK me in massage.

HOPE it helps u

Discussion

18.	Find the sum of all even natural numbers between 1 to 350.
Answer» ANSWER: Thus, the number of terms (N) = 175. Hence, the SUM of all EVEN NUMBERS from 1 to 350 is 30800. hope you find it helpful

18.

Find the sum of all even natural numbers between 1 to 350.

Answer»

ANSWER:

Thus, the number of terms (N) = 175. Hence, the SUM of all EVEN NUMBERS from 1 to 350 is 30800.

hope you find it helpful

Discussion

19.	⅚in the decimal form is____
Answer» ANSWER: =0.8333 approx Step-by-step explanation: 5/6 =0.83333333333 is the DECIMAL FORM of 5/6

19.

⅚in the decimal form is____

Answer»

ANSWER:

=0.8333 approx

Step-by-step explanation:

5/6

=0.83333333333

is the DECIMAL FORM of 5/6

Discussion

20.	Find LCM and HCF of 26 and 91 and 510 by prime factorization method
Answer» Answer: LCM = 46,410 Step-by-step explanation: Solution by Prime Factorization List all prime factors for each number. Prime Factorization of 26 is: 2 x 13 => 21 x 131 Prime Factorization of 91 is: 7 x 13 => 71 x 131 Prime Factorization of 510 is: 2 x 3 x 5 x 17 => 21 x 31 x 51 x 171 For each prime factor, find where it occurs most often as a factor and write it that many times in a NEW list. The new superset list is 2, 3, 5, 7, 13, 17 Multiply these factors together to find the LCM. LCM = 2 x 3 x 5 x 7 x 13 x 17 = 46410 In exponential form: LCM = 21 x 31 x 51 x 71 x 131 x 171 = 46410 LCM = 46410 Therefore, LCM(26, 91, 510) = 46,410

20.

Find LCM and HCF of 26 and 91 and 510 by prime factorization method

Answer»

Answer:

LCM = 46,410

Step-by-step explanation:

Solution by Prime Factorization

List all prime factors for each number.

Prime Factorization of 26 is:

2 x 13 => 21 x 131

Prime Factorization of 91 is:

7 x 13 => 71 x 131

Prime Factorization of 510 is:

2 x 3 x 5 x 17 => 21 x 31 x 51 x 171

For each prime factor, find where it occurs most often as a factor and write it that many times in a NEW list.

The new superset list is

2, 3, 5, 7, 13, 17

Multiply these factors together to find the LCM.

LCM = 2 x 3 x 5 x 7 x 13 x 17 = 46410

In exponential form:

LCM = 21 x 31 x 51 x 71 x 131 x 171 = 46410

LCM = 46410

Therefore,

LCM(26, 91, 510) = 46,410

Discussion

21.	Am in year 10 and i dont now mathspls help
Answer» Answer: OHHHH Step-by-step EXPLANATION: NO PROBLEM YOU CAN ASK QUESTIONS WE ARE HERE TO HELPS YOU STAY SAFE AND HEALTHY GOD BLESS YOU

21.

Am in year 10 and i dont now mathspls help

Answer»

Answer:

OHHHH

Step-by-step EXPLANATION:

NO PROBLEM

YOU CAN ASK QUESTIONS WE ARE HERE TO HELPS YOU

STAY SAFE AND HEALTHY

GOD BLESS YOU

Discussion

22.	Write the following in decimal form 4 1/ 8 meaning in Punjabi
Answer» Answer: DEFINE AND IDENTIFY EXAMPLES OF TERMINATING DECIMALS - DEFINITION A terminating decimal is a decimal that ENDS i.e. it has finite number of digits. For a fraction in decimal form, while PERFORMING division after a certain number of STEPS, we get the remainder zero. The quotient obtained as decimal is called the terminating decimal. For eg:- 83=0.375 has 3 digits after decimal point 45=1.25 has 2 digits after decimal point Hence, 0.375 and 1.25 are terminating decimals. NON-TERMINATING RECURRING DECIMALS - DEFINITION While expressing a fraction in the decimal form, when we perform division we get some remainder. If the division process does not end i.e. we do not get the remainder equal to zero; then such decimal is known as non-terminating decimal. In some CASES, a digit or a block of digits repeats itself in the decimal PART, then the decimal is non-terminating recurring decimal. For eg:- 1.6666....,0.141414... NON-TERMINATING AND NON-RECURRING DECIMALS - DEFINITION While expressing a fraction in the decimal form, when we perform division we get some remainder. If the division process does not end i.e. we do not get the remainder equal to zero; then such decimal is known as non-terminating decimal. And if a digit or a block of digits does not repeats itself in the decimal part, such decimals are called non-terminating and non-recurring decimals. For eg:- 1.41421356.....

22.

Write the following in decimal form 4 1/ 8 meaning in Punjabi

Answer»

Answer:

DEFINE AND IDENTIFY EXAMPLES OF TERMINATING DECIMALS - DEFINITION

A terminating decimal is a decimal that ENDS i.e. it has finite number of digits.

For a fraction in decimal form, while PERFORMING division after a certain number of STEPS, we get the remainder zero.

The quotient obtained as decimal is called the terminating decimal.

For eg:-

83=0.375 has 3 digits after decimal point

45=1.25 has 2 digits after decimal point

Hence, 0.375 and 1.25 are terminating decimals.

NON-TERMINATING RECURRING DECIMALS - DEFINITION

While expressing a fraction in the decimal form, when we perform division we get some remainder.

If the division process does not end i.e. we do not get the remainder equal to zero; then such decimal is known as non-terminating decimal.

In some CASES, a digit or a block of digits repeats itself in the decimal PART, then the decimal is non-terminating recurring decimal.

For eg:-

1.6666....,0.141414...

NON-TERMINATING AND NON-RECURRING DECIMALS - DEFINITION

While expressing a fraction in the decimal form, when we perform division we get some remainder.

If the division process does not end i.e. we do not get the remainder equal to zero; then such decimal is known as non-terminating decimal.

And if a digit or a block of digits does not repeats itself in the decimal part, such decimals are called non-terminating and non-recurring decimals.

For eg:- 1.41421356.....

Discussion

23.	Divide the sum of and12/5 and 13/7 by the product of –4/7 and–1/2.
Answer» Answer: 14.9 Step-by-step EXPLANATION: SUM of 12/5 and 13/7 = 149/35 product of –4/7 and–1/2 =2/7 Division of the 149/35 and 2/7 = (149 × 7) ÷ (35 ×2 ) = 149/10 =14.9

23.

Divide the sum of and12/5 and 13/7 by the product of –4/7 and–1/2.

Answer»

Answer:

14.9

Step-by-step EXPLANATION:

SUM of 12/5 and 13/7 = 149/35

product of –4/7 and–1/2 =2/7

Division of the 149/35 and 2/7

= (149 × 7) ÷ (35 ×2 )

= 149/10

=14.9

Discussion

24.	The factorisation of a (x + y + z) + b(x + y + z) + c(x + y + z) is
Answer» Step-by-step EXPLANATION: *GIVEN* *EXPRESSION* is *a (x + y + z) + b(x + y + z) + c(x + y + z)* =>*(x + y + z)* (a + b + c ) *The factorisation of a (x + y + z) + b(x + y + z) +* *c(x + y + z)* is *(x + y + z) (a + b + c )*

24.

The factorisation of a (x + y + z) + b(x + y + z) + c(x + y + z) is

Answer»

Step-by-step EXPLANATION:

GIVEN EXPRESSION is

a (x + y + z) + b(x + y + z) + c(x + y + z)

=>(x + y + z) (a + b + c )

The factorisation of a (x + y + z) + b(x + y + z) +

c(x + y + z) is (x + y + z) (a + b + c )

Discussion

25.	-5
Answer» Step-by-step explanation: High resolution ALSO provides greater detail and flexibility when CROPPING and editing PHOTOS. Employing an INTEGRATED GPS unit, the ...

25.

-5

Answer»

Step-by-step explanation:

High resolution ALSO provides greater detail and flexibility when CROPPING and editing PHOTOS. Employing an INTEGRATED GPS unit, the ...

Discussion

26.	(a²+b²)(-a²+b²) using Identity of algebraic expressions
Answer» Step-by-step explanation: MAY IT HELPS U... IF UR SATISFIED WITH ANS..MARK AS BRAINALIST.. FOLLOW ME..

26.

(a²+b²)(-a²+b²) using Identity of algebraic expressions

Answer»

Step-by-step explanation:

MAY IT HELPS U...

IF UR SATISFIED WITH ANS..MARK AS BRAINALIST..

FOLLOW ME..

Discussion

27.	Rectangucost of white washing the walls of the room and the ceiling at the* 7.50 per m( The area of the sho(i) The cost of sheet for it, if a sheet measuring ImThe length, breadth and height of a room are 5 m, 4 m and 3 mIll has a perimeter 250 m. If the cost of painting
Answer» Answer: 425 Step-by-step EXPLANATION:

27.

Rectangucost of white washing the walls of the room and the ceiling at the* 7.50 per m( The area of the sho(i) The cost of sheet for it, if a sheet measuring ImThe length, breadth and height of a room are 5 m, 4 m and 3 mIll has a perimeter 250 m. If the cost of painting

Answer»

Answer:

425

Step-by-step EXPLANATION:

Discussion

28.	Describe the following sets in Roster formi) {x/x is a letter of the word 'MARRIAGEii) {x/x is an integer,211) {x/x = 2n, neN
Answer» ANSWER: i) A = { M,A,R,I,G,E } u have to WRITE all the letters from MARRIAGE and which are double used skip those

28.

Describe the following sets in Roster formi) {x/x is a letter of the word 'MARRIAGEii) {x/x is an integer,211) {x/x = 2n, neN

Answer»

ANSWER:

i) A = { M,A,R,I,G,E }

u have to WRITE all the letters from MARRIAGE and which are double used skip those

Discussion

29.	1. In A ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine:(1) sin A, cos A(ii) sin C, cos C
Answer» Step-by-step EXPLANATION: see this ANSWER PLEASE LIKE and FOLLOW me

29.

1. In A ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine:(1) sin A, cos A(ii) sin C, cos C

Answer»

Step-by-step EXPLANATION:

see this ANSWER

PLEASE LIKE and FOLLOW me

Discussion

30.	10a?, -15a2, 4a2, -3a2
Answer» ANSWER: WHATTT weee haveee to do in THISSS

30.

10a?, -15a2, 4a2, -3a2

Answer»

ANSWER:

WHATTT weee haveee to do in THISSS

Discussion

31.	204 3/4m is what per cent of 1365 m?Pls answer fast.
Answer» 204 3/4 is 17% of 1365 Step-by-step EXPLANATION: HOPE this is USEFUL...

31.

204 3/4m is what per cent of 1365 m?Pls answer fast.

Answer»

204 3/4 is 17% of 1365

Step-by-step EXPLANATION:

HOPE this is USEFUL...

Discussion

32.	The area of the circle whose diameter is 21 cm is(a) 346.5 cm²(b) 37.68 cm²(c) 18.84 cm²(d) 19.84 cm²Answer it with explanation
Answer» ANSWER: $\huge\boxed{\fcolorbox{syam}{blue}{AnSwer}}$ ==>(a) 346.5 cm² Explanation Reason: Here diameter = 21 cm $∴ Radius r = \: \frac{21}{2} \: cm$ Area of the CIRCLE, A = πr² $∴A = \frac{22}{7} \times \frac{21}{2} \times \frac{21}{2} = 11 \times 3 \times \frac{21}{2} = \frac{693}{2} = 346.5$ cm²

32.

The area of the circle whose diameter is 21 cm is(a) 346.5 cm²(b) 37.68 cm²(c) 18.84 cm²(d) 19.84 cm²Answer it with explanation

Answer»

ANSWER:

$\huge\boxed{\fcolorbox{syam}{blue}{AnSwer}}$

==>(a) 346.5 cm²

Explanation

Reason: Here diameter = 21 cm

$∴ Radius r = \: \frac{21}{2} \: cm$

Area of the CIRCLE, A = πr²

$∴A = \frac{22}{7} \times \frac{21}{2} \times \frac{21}{2} = 11 \times 3 \times \frac{21}{2} = \frac{693}{2} = 346.5$ cm²

Discussion

33.	Arjun buys two pairs of jeans at the rate of ₹ 1800 each, two T-shirts at the rate of ₹450 each, a pair of leather shoes for ₹ 750, and a leather handbag for ₹ 2800. If the sales tax is charged at 8% for clothes and 18% for leather goods . find the total bill amount.
Answer» Here we have given NCERT Exemplar Class 8 Maths ... 2 SUPPOSE a certain sum doubles in 2 yr at r% rate of ... (b) SINCE, sales tax is charged on the SALE of an item by ...

33.

Arjun buys two pairs of jeans at the rate of ₹ 1800 each, two T-shirts at the rate of ₹450 each, a pair of leather shoes for ₹ 750, and a leather handbag for ₹ 2800. If the sales tax is charged at 8% for clothes and 18% for leather goods . find the total bill amount.

Answer»

Here we have given NCERT Exemplar Class 8 Maths ... 2 SUPPOSE a certain sum doubles in 2 yr at r% rate of ... (b) SINCE, sales tax is charged on the SALE of an item by ...

Discussion

34.	Find square of a/3b^2
Answer» ANSWER: ⇒ab²/3 ⇒Simplify a/3 ⇒ a/3 • b2 ⇒ab²/3

34.

Find square of a/3b^2

Answer»

ANSWER:

⇒ab²/3

⇒Simplify a/3

⇒ a/3 • b2

⇒ab²/3

Discussion

35.	If 11 teams are participating in a tournament, how many team will be place in upper half?
Answer» ANSWER: answer is 5½ is CORRECT answer Step-by-step EXPLANATION: mark me as BRAINLIST asnwer

35.

If 11 teams are participating in a tournament, how many team will be place in upper half?

Answer»

ANSWER:

answer is 5½

is CORRECT answer

Step-by-step EXPLANATION:

mark me as BRAINLIST asnwer

Discussion

36.	The co efficient of x² in 3x²+2x²-x+1
Answer» ANSWER: COEFFICIENT of x^2 is 5 3x^2+2x^2 5x^2

36.

The co efficient of x² in 3x²+2x²-x+1

Answer»

ANSWER:

COEFFICIENT of x^2 is 5

3x^2+2x^2

5x^2

Discussion

37.	ABC and DBC are two isosceles triangles on the same base BC.Show that angle ABD=angle ACD
Answer» Step-by-step explanation: ∠ABD = ∠ABC + ∠CBD ∠ACD = ∠ACB + DCB Both the triangles are ISOSCELES, so the ANGLES FORMING at the BASE would be equal. So if ∠ABC = ∠ACB and ∠DBC = ∠BCD, the sum of ∠ABC + ∠DBC would be equal to the sum of ∠ACD and ∠BCD. Hence, proved.

37.

ABC and DBC are two isosceles triangles on the same base BC.Show that angle ABD=angle ACD

Answer»

Step-by-step explanation:

∠ABD = ∠ABC + ∠CBD

∠ACD = ∠ACB + DCB

Both the triangles are ISOSCELES, so the ANGLES FORMING at the BASE would be equal.

So if ∠ABC = ∠ACB and ∠DBC = ∠BCD, the sum of ∠ABC + ∠DBC would be equal to the sum of ∠ACD and ∠BCD.

Hence, proved.

Discussion

38.	2x+3y=123x-2y=6find x and y
Answer» ANSWER: iiiiiidddddddddkkkkkkkk SRY

38.

2x+3y=123x-2y=6find x and y

Answer»

ANSWER:

iiiiiidddddddddkkkkkkkk SRY

Discussion

39.	find the height of the room in which perimeter of its base is 60meter and area of 4 walls is 240 meter square
Answer» It is given that length, breadth and HEIGHT of a room are 8 m, 5 m and 3 m respectively. AREA of four walls of the room is: 2h(l+b) A=2h(l+b)=2×3(8+5)=6×13=78 m 2 Area of the ceiling is: A=l×b=8×5=40 m 2 Total area of the four walls and the ceiling of the room is 78+40=118 m 2 It is given that COST of white washing is Rs.15/m 2 , THEREFORE, Total cost of white washing is: 118×15=1770 Hence, the cost of white washing the walls is Rs.1770.

39.

find the height of the room in which perimeter of its base is 60meter and area of 4 walls is 240 meter square

Answer»

It is given that length, breadth and HEIGHT of a room are 8 m, 5 m and 3 m respectively.

AREA of four walls of the room is: 2h(l+b)

A=2h(l+b)=2×3(8+5)=6×13=78 m

2

Area of the ceiling is:

A=l×b=8×5=40 m

2

Total area of the four walls and the ceiling of the room is 78+40=118 m

2

It is given that COST of white washing is Rs.15/m

2

, THEREFORE,

Total cost of white washing is:

118×15=1770

Hence, the cost of white washing the walls is Rs.1770.

Discussion

40.	If the cost of OpenAl is (4x^5-25x^4+40x^3+5x^2-30x-18) pesos in installment bases if you decided to pay the robot for (x^2-6x+9) months, how much is your monthly payment? show solution pls
Answer» ANSWER: JOIN Step-by-step EXPLANATION: MEETING ID: 725 3816 3828 Passcode: 000

40.

If the cost of OpenAl is (4x^5-25x^4+40x^3+5x^2-30x-18) pesos in installment bases if you decided to pay the robot for (x^2-6x+9) months, how much is your monthly payment? show solution pls

Answer»

ANSWER:

JOIN

Step-by-step EXPLANATION:

MEETING ID: 725 3816 3828

Passcode: 000

Discussion

41.	एस्टीमेट द स्क्वायर रूट ऑफ सम अदर नंबर 509
Answer» ANSWER: baimark me BRILIANT MARK me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant

41.

एस्टीमेट द स्क्वायर रूट ऑफ सम अदर नंबर 509

Answer»

ANSWER:

baimark me BRILIANT MARK me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant mark me briliant

Discussion

42.	Find a quadratic polynomial whose zeroesare a and Bsatisfying the relation a + B = 3and a - B = -1.
Answer» a + b = 3 ( EQUATION 1 ) a - b = -1 ( equation 2 ) - + + 2b = 4 b = 4/2 = 2 Step-by-step EXPLANATION: Put value of b in equation ( 1 ) a + b = 3 a + 2 = 3 a = 3 - 2 a = 1

42.

Find a quadratic polynomial whose zeroesare a and Bsatisfying the relation a + B = 3and a - B = -1.

Answer»

a + b = 3 ( EQUATION 1 )

a - b = -1 ( equation 2 )

- + +

2b = 4

b = 4/2 = 2

Step-by-step EXPLANATION:

Put value of b in equation ( 1 )

a + b = 3

a + 2 = 3

a = 3 - 2

a = 1

Discussion

43.	Find square of a/3b square
Answer» ANSWER: SORRY don't KNOW the answer plz FOLLOW me

43.

Find square of a/3b square

Answer»

ANSWER:

SORRY don't KNOW the answer

plz FOLLOW me

Discussion

44.	Find the time taken when principal=Rs 9540; S.I =Rs1908 and rate=8%P.a
Answer» Step-by-step EXPLANATION: TIME TAKEN should be 2.5 years I HOPE it's coreect ,,

44.

Find the time taken when principal=Rs 9540; S.I =Rs1908 and rate=8%P.a

Answer»

Step-by-step EXPLANATION:

TIME TAKEN should be 2.5 years

I HOPE it's coreect ,,

Discussion

45.	Negative of They have to go1. the do not have to go 2. they don't have to go.3. they didn't have to go4. None of these
Answer» ANSWER: OPTION 3. They don't have to go. HOPE IT HELPS ☺

45.

Negative of They have to go1. the do not have to go 2. they don't have to go.3. they didn't have to go4. None of these

Answer»

ANSWER:

OPTION 3.

They don't have to go.

HOPE IT HELPS ☺

Discussion

46.	If the annual increase in the population of a town is 4 percent and thepresent number of inhabitants be 5 lakh, then what will it be in threeyears time?
Answer» its no OPT to write here it is q of COMPOUND INTEREST so just put the VALUES on the formula

Discussion

47.	Evaluatelim x tends to a (a-x) tan πx/2
Answer» Step-by-step EXPLANATION: ANSWER...................

47.

Evaluatelim x tends to a (a-x) tan πx/2

Answer»

Step-by-step EXPLANATION:

ANSWER...................

Discussion

48.	N"th term of 4+9+14+................is
Answer» Answer: 5N - 1 Step-by-step EXPLANATION: a=4 d= 5 an=a+(n-1)5 = 4 + (n-1) 5 = 4 + 5n-5 = 5n-5+4 = 5n - 1 pls MARK me as brainliest

48.

N"th term of 4+9+14+................is

Answer»

Answer:

5N - 1

Step-by-step EXPLANATION:

a=4

d= 5

an=a+(n-1)5

= 4 + (n-1) 5

= 4 + 5n-5

= 5n-5+4

= 5n - 1

pls MARK me as brainliest

Discussion

49.	Find the value dicriminate 2y-y+2=0
Answer» ANSWER: 2y-y+2=0 y+2=0 y=-2 hope this answer

49.

Find the value dicriminate 2y-y+2=0

Answer»

ANSWER:

2y-y+2=0

y+2=0

y=-2

hope this answer

Discussion

50.	7. Sonia made a cuboid of plasticine of sides 5 cm. 4 cm, 6 cm. How many such cubocube?
Answer» Step-by-step explanation: Each side of cube = L.C.M of 3,4 and 5 CM =60 cm. Number of cuboids to form a cube = volume of cube/volume of a CUBOID. =(60cm×60cm×60cm/(3cm×4cm×5cm). =3600 cuboids.

50.

7. Sonia made a cuboid of plasticine of sides 5 cm. 4 cm, 6 cm. How many such cubocube?

Answer»

Step-by-step explanation:

Each side of cube = L.C.M of 3,4 and 5 CM =60 cm.

Number of cuboids to form a cube

= volume of cube/volume of a CUBOID.

=(60cm×60cm×60cm/(3cm×4cm×5cm).

=3600 cuboids.

Discussion

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