332354 + Interview Questions in Secondary School in Math

1.	Estimate each sum to the nearest ten 538+276 pls answer
Answer» Answer: 810 Step-by-step EXPLANATION:

1.

Estimate each sum to the nearest ten 538+276 pls answer

Answer»

Answer:

810

Step-by-step EXPLANATION:

Discussion

2.	A Square of nine numbers is marked in a calendar . The sum of all these number is 90 . what are the numbers
Answer» Step-by-step explanation: Divide the sum (90) by the NUMBER of figures (9), you find 10. the center line of the square will be a row of three numbers with 10 in the middle, i.e. 9 10 11. Its sum is three times 10 (because 9 + 11 = 2 * 10). That is all. Pick any calendar month whereby 10 is not on a SIDE, and select the square of numbers where 10 in in the center place. Example: October 2018, where 10 is a Wednesday. The square will be TU We Th on three consecutive lines with 10 in the middle. 2 3 4 Sum of row: 9 9 10 11 Sum of row: 30 16 17 18 Sum of row: 51 Sum of all three ROWS: 90 QED

2.

A Square of nine numbers is marked in a calendar . The sum of all these number is 90 . what are the numbers

Answer»

Step-by-step explanation:

Divide the sum (90) by the NUMBER of figures (9), you find 10.

the center line of the square will be a row of three numbers with 10 in the middle, i.e. 9 10 11. Its sum is three times 10 (because 9 + 11 = 2 * 10).

That is all. Pick any calendar month whereby 10 is not on a SIDE, and select the square of numbers where 10 in in the center place. Example: October 2018, where 10 is a Wednesday. The square will be TU We Th on three consecutive lines with 10 in the middle.

2 3 4 Sum of row: 9

9 10 11 Sum of row: 30

16 17 18 Sum of row: 51

Sum of all three ROWS: 90 QED

Discussion

3.	The owner of a taxi company decides to run all the taxi on CNG fuels instead of petrol/ diesel. The taxi charges in city comprises of fixed charges together with the charge for the distance covered. For a journey of 13 km, the charge paid is ? 129 and for journey of 22 km, the charge paid is ^ 210. (i) What will a person have to pay for travelling a distance of 32 km? (ii) Why did he decide to use CNG for his taxi as a fuel?
Answer» Answer: it's a heavy question hi Friend MARK it brainliest please.i just NEED ONE vote from you.you can contact me on online teaching to clear your SCHOOL assignments and doubts contact me on 9965521312 I will help you

3.

The owner of a taxi company decides to run all the taxi on CNG fuels instead of petrol/ diesel. The taxi charges in city comprises of fixed charges together with the charge for the distance covered. For a journey of 13 km, the charge paid is ? 129 and for journey of 22 km, the charge paid is ^ 210. (i) What will a person have to pay for travelling a distance of 32 km? (ii) Why did he decide to use CNG for his taxi as a fuel?

Answer»

Answer:

it's a heavy question

hi Friend MARK it brainliest please.i just NEED ONE vote from you.you can contact me on online teaching to clear your SCHOOL assignments and doubts contact me on 9965521312

I will help you

Discussion

4.	XIX the predecessor and successor in roman no way
Answer» ANSWER: PREDECESSOR of XIX is XVIII = 18 Successor of XIX is XX = 20 HOPE THAT IT WILL BE HELPFUL TO YOU.....

4.

XIX the predecessor and successor in roman no way

Answer»

ANSWER:

PREDECESSOR of XIX is XVIII = 18

Successor of XIX is XX = 20

HOPE THAT IT WILL BE HELPFUL TO YOU.....

Discussion

5.	The value of lim x →0 (√x²+1) -1 / (√x² +9) – 3(a) 4 (b) 3(c) 1 (d) 2Please show how to solve.....Please fast....
Answer» I *couldn't* *UNDERSTAND* *what* *you* *WANT* to *SAY* *about* it *and* I *did* *not* *KNOW* it...

Discussion

6.	1025 is a perfect square number
Answer» Answer: 1025 is a perfect square if the square ROOT of 1025 equals a WHOLE number. IF YOU LIKE THE ANSWER PLEASE THANK ME AND MARK ME AS BRAINLIEST

6.

1025 is a perfect square number

Answer»

Answer:

1025 is a perfect square if the square ROOT of 1025 equals a WHOLE number.

IF YOU LIKE THE ANSWER PLEASE THANK ME AND MARK ME AS BRAINLIEST

Discussion

7.	Heyaaaaaa!!!!!! WohoooooooooBalle balle
Answer» ANSWER: HAY MAIN vi PUNJABI haaa

7.

Heyaaaaaa!!!!!! WohoooooooooBalle balle

Answer»

ANSWER:

HAY MAIN vi PUNJABI haaa

Discussion

8.	Write the additive inverse of -5/9proper solve it-9/5,9/5,5/9choice for
Answer» Answer: 9/5 is the CORRECT answer Hope it's HELP you Mark as BRAINLIEST

8.

Write the additive inverse of -5/9proper solve it-9/5,9/5,5/9choice for

Answer»

Answer:

9/5 is the CORRECT answer

Hope it's HELP you

Mark as BRAINLIEST

Discussion

9.	Find the value of a 7+24i find a complex numbers
Answer» ANSWER: it's a NONSENSE QUESTION PLEASE CHECK your question

9.

Find the value of a 7+24i find a complex numbers

Answer»

ANSWER:

it's a NONSENSE QUESTION PLEASE CHECK your question

Discussion

10.	Find the hcf of 282 and 186 and 124
Answer» HOPE the ANSWER HELPS you...

Discussion

11.	Fill in the missing number to contineu the pattern 67226021 to 68226021
Answer» ANSWER: The MISSING NUMBER is 8

11.

Fill in the missing number to contineu the pattern 67226021 to 68226021

Answer»

ANSWER:

The MISSING NUMBER is 8

Discussion

12.	In a triangle (x+y+z)(y+z-k)=kyz then value of k is
Answer» Answer: As given , x, y and z are integers. y + z - x= constant y + z- x = K (z+x-y)(x+y-z) VARIES y z. →(x+z-y)[x-(z-y)]= P y z ⇒ x² - (z-y)²= P y z→→→→ Using Identity A²- B²=(A-B)(A+B) ⇒x² - (z-y)²- 4 y z= P y z - 4 y z ⇒x²- z²-y²+2 y z - 4 y z=(P-4) y z ⇒x²- (y+z)²= M y z⇒⇒P-4= M ⇒(x-y-z)(x+y+z)=M y z-----(1)→→→→ Using Identity A²- B²=(A-B)(A+B) As , y + z - x= k x-y-z= -k= N Putting the value of , x-y-z in equation (1) N (x+y+z)=M y z x+y+z= y z x + y + z= D y z, where = D Hence, (x+y+z)varies yz. Step-by-step explanation: plz make mem brainliest

12.

In a triangle (x+y+z)(y+z-k)=kyz then value of k is

Answer»

Answer: As given , x, y and z are integers.

y + z - x= constant

y + z- x = K

(z+x-y)(x+y-z) VARIES y z.

→(x+z-y)[x-(z-y)]= P y z

⇒ x² - (z-y)²= P y z→→→→ Using Identity A²- B²=(A-B)(A+B)

⇒x² - (z-y)²- 4 y z= P y z - 4 y z

⇒x²- z²-y²+2 y z - 4 y z=(P-4) y z

⇒x²- (y+z)²= M y z⇒⇒P-4= M

⇒(x-y-z)(x+y+z)=M y z-----(1)→→→→ Using Identity A²- B²=(A-B)(A+B)

As , y + z - x= k

x-y-z= -k= N

Putting the value of , x-y-z in equation (1)

N (x+y+z)=M y z

x+y+z= y z

x + y + z= D y z, where = D

Hence, (x+y+z)varies yz.

Step-by-step explanation: plz make mem brainliest

Discussion

13.	Factorise each of the following question first 6 ABC my 6abc -9 a square c
Answer» Answer: crush UGLY TAHSIN IDIOSYNCRASY H

13.

Factorise each of the following question first 6 ABC my 6abc -9 a square c

Answer»

Answer:

crush UGLY TAHSIN IDIOSYNCRASY H

Discussion

14.	12. The probability that an amateur golfer actually hits the ball isIf four separate attempts are made, find the probability that theball will be hit:110a) four timesb) at least twicec) not at all.
Answer» ANSWER: if it was RIGHT PLS mark me as brain liest Step-by-step EXPLANATION: four TIMES

14.

12. The probability that an amateur golfer actually hits the ball isIf four separate attempts are made, find the probability that theball will be hit:110a) four timesb) at least twicec) not at all.

Answer»

ANSWER:

if it was RIGHT PLS mark me as brain liest

Step-by-step EXPLANATION:

four TIMES

Discussion

15.	I have a question in my maths project for class 6 is( Plan a layout of the monument that includes at least three structural aspects of the monument. Choose and mention your Own scale.)
Answer» This article is about architectural design. For ACTIVITY in time, see Plan. For general design, see Plan (drawing). For drawing in architecture, see Architectural drawing. Sketch of PROPOSED buildings and grounds of the Abbot Academy in ANDOVER Massachusetts, 1829 Buildings of the Abbot Academy nowadays. In the field of architecture an architectural plan is a design and planning for a building, and can CONTAIN architectural drawings, specifications of the design, CALCULATIONS, time planning of the building process, and other documentation.

15.

I have a question in my maths project for class 6 is( Plan a layout of the monument that includes at least three structural aspects of the monument. Choose and mention your Own scale.)

Answer»

This article is about architectural design. For ACTIVITY in time, see Plan. For general design, see Plan (drawing). For drawing in architecture, see Architectural drawing.

Sketch of PROPOSED buildings and grounds of the Abbot Academy in ANDOVER Massachusetts, 1829

Buildings of the Abbot Academy nowadays.

In the field of architecture an architectural plan is a design and planning for a building, and can CONTAIN architectural drawings, specifications of the design, CALCULATIONS, time planning of the building process, and other documentation.

Discussion

16.	Factorise 4 y square + 20 y + 25
Answer» ANSWER: Here's ur ans Step-by-step explanation: Hope it helps U FRND

16.

Factorise 4 y square + 20 y + 25

Answer»

ANSWER:

Here's ur ans

Step-by-step explanation:

Hope it helps U FRND

Discussion

17.	The value of2 points((-3) ^2) ^2 _ (4) ^317-28-145145
Answer» ANSWER: SORRY I can't answer because I can't UNDERSTAND your QUESTION

17.

The value of2 points((-3) ^2) ^2 _ (4) ^317-28-145145

Answer»

ANSWER:

SORRY I can't answer because I can't UNDERSTAND your QUESTION

Discussion

18.	(1) If one of the roots of the equationkx2+2 x-3=0 is 2, then find k
Answer» Answer: 1 Step-by-step EXPLANATION:

18.

(1) If one of the roots of the equationkx2+2 x-3=0 is 2, then find k

Answer»

Answer:

1

Step-by-step EXPLANATION:

Discussion

19.	How much money i have in my pocket now
Answer» Answer: 50rs CC...................

19.

How much money i have in my pocket now

Answer»

Answer:

50rs CC...................

Discussion

20.	Prove that (√13 - √18)is an irrational number.
Answer» ANSWER: PLEASE thank❤ me Step-by-step EXPLANATION: and MARK me as BRAINLIEST

20.

Prove that (√13 - √18)is an irrational number.

Answer»

ANSWER:

PLEASE thank❤ me

Step-by-step EXPLANATION:

and MARK me as BRAINLIEST

Discussion

21.	(4,5तथा 6 का औसत है)
Answer» ANSWER: (4+5+6)/3 =15/3 =5 5 will be the AVERAGE

21.

(4,5तथा 6 का औसत है)

Answer»

ANSWER:

(4+5+6)/3

=15/3

=5

5 will be the AVERAGE

Discussion

22.	The sides of a right triangle are 5cm, 12 cm and 13 cm. Then its area is
Answer» you should GIVE the FIGURE of these QUESTION.....

22.

The sides of a right triangle are 5cm, 12 cm and 13 cm. Then its area is

Answer»

you should GIVE the FIGURE of these QUESTION.....

Discussion

23.	Factorise 4 y square + 20 y + 25help me please
Answer» ANSWER: (2y+5)^2 Step-by-step EXPLANATION:

23.

Factorise 4 y square + 20 y + 25help me please

Answer»

ANSWER:

(2y+5)^2

Step-by-step EXPLANATION:

Discussion

24.	A. Two complementary angles are x+20 and 2x-56 degrees. i. The value of x = ___ degrees. *I. 42ii. 40iii. 44
Answer» → Correct Question : TWO complementary angles are (x + 20) and (2x - 56) degrees ,then find the value of x . → To Find : The value of x... → Given : Given the two complementary angles , $\mathtt{(x + 20)}$ $\mathtt{(2x - 56)}$ → We Know : The sum of two complementary angles are 90°. → Concept : As we know that the sum of two complementary angles are 90° and the sides are given , i.e , (x + 20) and (2x - 56)°. So the equation formed is , $\boxed{\mathtt{\therefore (x + 20)° + (2x - 56)° = 90°}}$ → Solution : Given Equation : $\mathtt{(x + 20)° + (2x - 56)° = 90°}$ By solving this solution, we GET : $\mathtt{\Rightarrow x + 20° + 2x - 56° = 90°}$ $\mathtt{\Rightarrow 3x - 36° = 90°}$ $\mathtt{\Rightarrow 3x = 90° + 36°}$ $\mathtt{\Rightarrow 3x = 126°}$ $\mathtt{\Rightarrow x = \dfrac{126°}{3}}$ $\mathtt{\Rightarrow x = \dfrac{\cancel{126°}}{\cancel{3}}}$ $\mathtt{\Rightarrow x = 42°}$ HENCE ,the value of x is 42°. *The answer is option (i)...* → Additional information : Sum of two supplementary angles = 180° Heron's formula : $\mathtt{\sqrt{s(s - a)(s - b)(s - c)}}$ Where, a,b, and c are the sides of the SCALENE triangle ... s = semi-perimeter $s = \dfrac{a + b + c}{2}$ Area of Equilateral triangle = $\dfrac{\sqrt{3}a^{2}}{4}$ Area of isosceles triangle = $\dfrac{1}{4}b\sqrt{4a - b}$

24.

A. Two complementary angles are x+20 and 2x-56 degrees. i. The value of x = ___ degrees. *I. 42ii. 40iii. 44

Answer»

→ Correct Question :

TWO complementary angles are (x + 20) and (2x - 56) degrees ,then find the value of x .

→ To Find :

The value of x...

→ Given :

Given the two complementary angles ,

$\mathtt{(x + 20)}$

$\mathtt{(2x - 56)}$

→ We Know :

The sum of two complementary angles are 90°.

→ Concept :

As we know that the sum of two complementary angles are 90° and the sides are given , i.e , (x + 20) and (2x - 56)°.

So the equation formed is ,

$\boxed{\mathtt{\therefore (x + 20)° + (2x - 56)° = 90°}}$

→ Solution :

Given Equation :

$\mathtt{(x + 20)° + (2x - 56)° = 90°}$

By solving this solution, we GET :

$\mathtt{\Rightarrow x + 20° + 2x - 56° = 90°}$

$\mathtt{\Rightarrow 3x - 36° = 90°}$

$\mathtt{\Rightarrow 3x = 90° + 36°}$

$\mathtt{\Rightarrow 3x = 126°}$

$\mathtt{\Rightarrow x = \dfrac{126°}{3}}$

$\mathtt{\Rightarrow x = \dfrac{\cancel{126°}}{\cancel{3}}}$

$\mathtt{\Rightarrow x = 42°}$

HENCE ,the value of x is 42°.

The answer is option (i)...

→ Additional information :

Sum of two supplementary angles = 180°

Heron's formula :

$\mathtt{\sqrt{s(s - a)(s - b)(s - c)}}$

Where,

a,b, and c are the sides of the SCALENE triangle ...

s = semi-perimeter

$s = \dfrac{a + b + c}{2}$

Area of Equilateral triangle = $\dfrac{\sqrt{3}a^{2}}{4}$

Area of isosceles triangle = $\dfrac{1}{4}b\sqrt{4a - b}$

Discussion

25.	40% of the population of a town are men and 39% are women if the number of children and is 12600 find the number of men
Answer» Answer: 20% of the POPULATION of a TOWN are MEN

25.

40% of the population of a town are men and 39% are women if the number of children and is 12600 find the number of men

Answer»

Answer:

20% of the POPULATION of a TOWN are MEN

Discussion

26.	12.5% convert into fraction
Answer» Answer: 125/1000 Step-by-step EXPLANATION: BECAUSE % MEANS DIVIDED BY 100

26.

12.5% convert into fraction

Answer»

Answer:

125/1000

Step-by-step EXPLANATION:

BECAUSE % MEANS DIVIDED BY 100

Discussion

27.	892.7_ 573.07_95.007=
Answer» Step-by-step explanation: 224.623 ANSWER... PLEASE LIKE and FOLLOW me........, ..

27.

892.7_ 573.07_95.007=

Answer»

Step-by-step explanation:

224.623 ANSWER...

PLEASE LIKE and FOLLOW me........, ..

Discussion

28.	the height and two parallel sides of a trapezium are in the ratio 3:4:5.Find their lenghts if the area of the trapezium is 54 cm^2
Answer» Given :- The height and two parallel sides of a trapezium are in the ratio 3:4:5. The area of the trapezium is 54 cm^2 . To Find :- Lengths of Height and two parallel sides ? Solution :- Let us ASSUME that, height of trapezium is 3x cm and parallel sides are 4x cm and 5x cm. we know that , → Area of Trapezium = (1/2) * (Sum of parallel sides) * Height . Putting all values and given area we get, → (1/2) * (4x + 5x) * 3x = 54 → 9x * 3x = 54 * 2 → 27x² = 54 * 2 dividing both sides by 27, → x² = 2 * 2 → x² = 2² square - root both sides now, → x = 2 . THEREFORE, → Height of Trapezium = 3x = 3 * 2 = 6cm. (Ans.) → Length of SMALLER parallel SIDE = 4x = 42 = 8cm. (Ans.) → Length of LARGER parallel side = 5x = 52 = 10cm. (Ans.) Hence, Height and two parallel sides of given trapezium are 6cm , 8 cm and 10cm respectively .

28.

the height and two parallel sides of a trapezium are in the ratio 3:4:5.Find their lenghts if the area of the trapezium is 54 cm^2

Answer»

Given :-

The height and two parallel sides of a trapezium are in the ratio 3:4:5.
The area of the trapezium is 54 cm^2 .

To Find :-

Lengths of Height and two parallel sides ?

Solution :-

Let us ASSUME that, height of trapezium is 3x cm and parallel sides are 4x cm and 5x cm.

we know that ,

→ Area of Trapezium = (1/2) * (Sum of parallel sides) * Height .

Putting all values and given area we get,

→ (1/2) * (4x + 5x) * 3x = 54

→ 9x * 3x = 54 * 2

→ 27x² = 54 * 2

dividing both sides by 27,

→ x² = 2 * 2

→ x² = 2²

square - root both sides now,

→ x = 2 .

THEREFORE,

→ Height of Trapezium = 3x = 3 * 2 = 6cm. (Ans.)

→ Length of SMALLER parallel SIDE = 4x = 4*2 = 8cm. (Ans.)

→ Length of LARGER parallel side = 5x = 5*2 = 10cm. (Ans.)

Hence, Height and two parallel sides of given trapezium are 6cm , 8 cm and 10cm respectively .

Discussion

29.	Hi everyone my question what 100 into 100
Answer» Step-by-step explanation: 100×100=10000 ...............

29.

Hi everyone my question what 100 into 100

Answer»

Step-by-step explanation:

100×100=10000

...............

Discussion

30.	This question is of chapter quadrilaterals so please answer me like quadrilateralsFind the values of x, y and z in the diagram. Givereasons wherever necessary.
Answer» ANSWER: answer for the GIVEN PROBLEM is given

30.

This question is of chapter quadrilaterals so please answer me like quadrilateralsFind the values of x, y and z in the diagram. Givereasons wherever necessary.

Answer»

ANSWER:

answer for the GIVEN PROBLEM is given

Discussion

31.	4x + 7 = 9 . whose so ever will answer I will mark him brainliest. These question is from simpal equations .
Answer» ANSWER: GIVEN: 4x+7=9 4x=9-7 4x=2 x=2/4 x=1/2 Step-by-step EXPLANATION: HOPE this HELPS!!

31.

4x + 7 = 9 . whose so ever will answer I will mark him brainliest. These question is from simpal equations .

Answer»

ANSWER:

GIVEN:

4x+7=9

4x=9-7

4x=2

x=2/4

x=1/2

Step-by-step EXPLANATION:

HOPE this HELPS!!

Discussion

32.	siraj has planted saplings in 6/12parts of the garden.Monika has planted saplings in 3/34parts of the garden who has planted saplings in a larger area had how long is the larger area form the smaller one
Answer» ANSWER: 7282 this is a answer MARK me BRAIN LIST

32.

siraj has planted saplings in 6/12parts of the garden.Monika has planted saplings in 3/34parts of the garden who has planted saplings in a larger area had how long is the larger area form the smaller one

Answer»

ANSWER:

7282 this is a answer MARK me BRAIN LIST

Discussion

33.	After how many decimal places will the decimal representation of the229rational numberterminate?2².5
Answer» Step-by-step EXPLANATION: ..................................

33.

After how many decimal places will the decimal representation of the229rational numberterminate?2².5

Answer»

Step-by-step EXPLANATION:

..................................

Discussion

34.	5. Which of the following sets is afinite set?(a) the set of all the whole numbergreater than 7OO (b) The set of all the whole numbersO (c) the set of all rational numbers(d) the set of all whole numberbetween 0 and 307
Answer» Answer: d) a SET of all WHOLE numbers between 0 and 307 is a finite set Step-by-step EXPLANATION:

34.

5. Which of the following sets is afinite set?(a) the set of all the whole numbergreater than 7OO (b) The set of all the whole numbersO (c) the set of all rational numbers(d) the set of all whole numberbetween 0 and 307

Answer»

Answer:

d) a SET of all WHOLE numbers between 0 and 307

is a finite set

Step-by-step EXPLANATION:

Discussion

35.	உயர் பட்டியப்படிப்படிப் பட்டியalபடம்-2>34 14 )
Answer» Answer: தமிழ்ல எழுத தெரில்லனா Step-by-step EXPLANATION: Y r U writing Pls FOLLOW me I will follow u BACK

35.

உயர் பட்டியப்படிப்படிப் பட்டியalபடம்-2>34 14 )

Answer»

Answer:

தமிழ்ல எழுத தெரில்லனா

Step-by-step EXPLANATION:

Y r U writing

Pls FOLLOW me

I will follow u BACK

Discussion

36.	Plz my answer plz plz
Answer» ANSWER: please FOLLOW me. Q no. (6) .1 ANS = TRUE 2.ans= true 3. ans = True

36.

Plz my answer plz plz

Answer»

ANSWER:

please FOLLOW me.

Q no. (6) .1 ANS = TRUE

2.ans= true

3. ans = True

Discussion

37.	8. During a 'Good deed never die project in class VII, every student was awarded 5 points for good deedeveryday and - 1 for not attempting good deed.(i) If Vidushi did good deeds for 18 days in the month of March, how much she scored?(ii) If Shantanu did not attempt any good deeds for 7 days in the same month, how much he scored?(iii) Whose score is greater?
Answer» ANSWER: GREAT QUESTION

37.

8. During a 'Good deed never die project in class VII, every student was awarded 5 points for good deedeveryday and - 1 for not attempting good deed.(i) If Vidushi did good deeds for 18 days in the month of March, how much she scored?(ii) If Shantanu did not attempt any good deeds for 7 days in the same month, how much he scored?(iii) Whose score is greater?

Answer»

ANSWER:

GREAT QUESTION

Discussion

38.	4. Let A = {1,2} Set of subset of A iscalled power set of “A” denoted byP(A). Now n(P{A}) isO (a) 2O (b)4O (C) 3O (d) 5
Answer» ANSWER: a is the CORRECT mate Step-by-step EXPLANATION: MAKE ME AS BRAINELLEST OR FOLLOW ME BUDDY

38.

4. Let A = {1,2} Set of subset of A iscalled power set of “A” denoted byP(A). Now n(P{A}) isO (a) 2O (b)4O (C) 3O (d) 5

Answer»

ANSWER:

a is the CORRECT mate

Step-by-step EXPLANATION:

MAKE ME AS BRAINELLEST OR FOLLOW ME BUDDY

Discussion

39.	The roots of 35x2 + 13x - 12 = 0 are34a)1 or 2b)2 or 3c)1/2 or 1/3d)3/7 or -4/5
Answer» ANSWER: I THINK so the OPTION C will COME

39.

The roots of 35x2 + 13x - 12 = 0 are34a)1 or 2b)2 or 3c)1/2 or 1/3d)3/7 or -4/5

Answer»

ANSWER:

I THINK so the OPTION C will COME

Discussion

40.	If a+b+c=0 then prove that a³+b³+c³=3abc
Answer» ANSWER:- We KNOW, a³ + b³ + c³ - 3abc = (a + b + c)(a² + b² + c² - ab - bc - CA) Given that: (a + b + c) = 0. Putting the value:- a³ + b³ + c³ - 3abc = (a + b + c)(a² + b² + c² - ab - bc - ca) → a³ + b³ + c³ - 3abc = (0)(a² + b² + c² - ab - bc - ca) → a³ + b³ + c³ - 3abc = 0 → a³ + b³ + c³ = 3abc HENCE, Proved.

40.

If a+b+c=0 then prove that a³+b³+c³=3abc

Answer»

ANSWER:-

We KNOW,

a³ + b³ + c³ - 3abc = (a + b + c)(a² + b² + c² - ab - bc - CA)

Given that: (a + b + c) = 0.

Putting the value:-

a³ + b³ + c³ - 3abc = (a + b + c)(a² + b² + c² - ab - bc - ca)

→ a³ + b³ + c³ - 3abc = (0)(a² + b² + c² - ab - bc - ca)

→ a³ + b³ + c³ - 3abc = 0

→ a³ + b³ + c³ = 3abc

HENCE, Proved.

Discussion

41.	The y-intercept of the line 5x - 8y = -2 is
Answer» $= > 5x - 8y = - 2 \\ = > 5x + 2 = 8y \\ = > y \: \: \: \: \: \: \: \: \: \: = \frac{5x + 2}{8} \\ \\ when \: x \: = 0 \\ = > y = \frac{5 \times 0 + 2}{8} \\ = > y = \frac{2}{8} \\ = > y = \frac{1}{4}$ THEREFORE y - INTERCEPT is 1/4

41.

The y-intercept of the line 5x - 8y = -2 is

Answer»

$= > 5x - 8y = - 2 \\ = > 5x + 2 = 8y \\ = > y \: \: \: \: \: \: \: \: \: \: = \frac{5x + 2}{8} \\ \\ when \: x \: = 0 \\ = > y = \frac{5 \times 0 + 2}{8} \\ = > y = \frac{2}{8} \\ = > y = \frac{1}{4}$

THEREFORE y - INTERCEPT is 1/4

Discussion

42.	3. If n(P(A)) = 64 then n(A) =
Answer» ANSWER: $\huge\bold\red{I❤UBuddy }$

42.

3. If n(P(A)) = 64 then n(A) =

Answer»

ANSWER:

$\huge\bold\red{I❤UBuddy }$

Discussion

43.	If 80 men can do a piece of work in 10 days, in how many days can 20 men do the same piece of work ?
Answer» $\sf{\underline{\boxed{\large{\blue{\mathsf{Correct\: Question}}}}}}$ If 80 men can do a piece of work in 10 DAYS, in how many days can 20 men do the same piece of work ? _______________________ $\sf{\underline{\boxed{\large{\blue{\mathsf{Solution}}}}}}$ $\sf{\bold{\green{\underline{\underline{Given}}}}}$ 80 men can do a piece of work in 10 days _______________________ $\sf{\bold{\green{\underline{\underline{To\:Find}}}}}$ 20 men required how many days to do the same work =???? ______________________ $\sf{\bold{\green{\underline{\underline{Solution}}}}}$ USING unitary method $\sf\implies$ 80 men can do the work in = 10 days $\sf\implies$ 1 men can do the work in = $\sf10\times 80$ $\sf\implies$ 20 men can do the work in = $\sf{10\times 80}{20}$ $\sf\implies$ 20 men can do the work in = $\sf{10\times 4}$ $\sf\implies$ 20 men can do the work in = $\sf <klux>40</klux> days$ ________________________ $\sf{\bold{\green{\underline{\underline{Answer}}}}}$ 20 men complete the work in 40 days

43.

If 80 men can do a piece of work in 10 days, in how many days can 20 men do the same piece of work ?

Answer»

$\sf{\underline{\boxed{\large{\blue{\mathsf{Correct\: Question}}}}}}$

If 80 men can do a piece of work in 10 DAYS, in how many days can 20 men do the same piece of work ?

_______________________

$\sf{\underline{\boxed{\large{\blue{\mathsf{Solution}}}}}}$

$\sf{\bold{\green{\underline{\underline{Given}}}}}$

80 men can do a piece of work in 10 days

_______________________

$\sf{\bold{\green{\underline{\underline{To\:Find}}}}}$

20 men required how many days to do the same work =????

______________________

$\sf{\bold{\green{\underline{\underline{Solution}}}}}$

USING unitary method

$\sf\implies$ 80 men can do the work in = 10 days

$\sf\implies$ 1 men can do the work in = $\sf10\times 80$

$\sf\implies$ 20 men can do the work in = $\sf{10\times 80}{20}$

$\sf\implies$ 20 men can do the work in = $\sf{10\times 4}$

$\sf\implies$ 20 men can do the work in = $\sf <klux>40</klux> days$

________________________

$\sf{\bold{\green{\underline{\underline{Answer}}}}}$

20 men complete the work in 40 days

Discussion

44.	If sec teta +tanteta=l then prove that sectrta =l^2+1/2l
Answer» ANSWER: answer for the GIVEN PROBLEM is given

44.

If sec teta +tanteta=l then prove that sectrta =l^2+1/2l

Answer»

ANSWER:

answer for the GIVEN PROBLEM is given

Discussion

45.	Evaluate (601)2-(600)2
Answer» ANSWER: answer for the GIVEN PROBLEM is given

45.

Evaluate (601)2-(600)2

Answer»

ANSWER:

answer for the GIVEN PROBLEM is given

Discussion

46.	2. If A = {5,7,8,10), then how manyproper subsets can be formed fromA?
Answer» Answer: 7 Step-by-step EXPLANATION: n=4 No .of PROPER subsets=2n-1 2n-1=2(4)-1=8-1=7 No.of proper subsets=7 I hope this answer may help you

46.

2. If A = {5,7,8,10), then how manyproper subsets can be formed fromA?

Answer»

Answer:

7

Step-by-step EXPLANATION:

n=4

No .of PROPER subsets=2n-1

2n-1=2(4)-1=8-1=7

No.of proper subsets=7

I hope this answer may help you

Discussion

47.	Please solve this please help I can't do this please solve for me please
Answer» ANSWER: FIRST we will MULTIPLY 2X4 =8 and then 8-17

47.

Please solve this please help I can't do this please solve for me please

Answer»

ANSWER:

FIRST we will MULTIPLY 2X4 =8 and then 8-17

Discussion

48.	What is the length of segment \overline{BC} BC
Answer» Step-by-step EXPLANATION: GIVEN BC=2AB+3, AC=27 ⇒AC=AB+BC ⇒27=AB+2AB+3 ⇒27=3AB+3 ⇒AB=8

48.

What is the length of segment \overline{BC} BC

Answer»

Step-by-step EXPLANATION:

GIVEN BC=2AB+3, AC=27

⇒AC=AB+BC

⇒27=AB+2AB+3

⇒27=3AB+3

⇒AB=8

Discussion

49.	Sin(90-theta) + cos(90-theta)=
Answer» Step-by-step explanation: All TRIANGLES have 3 ANGLES that ADD to 180 degrees. Therefore, if one angle is 90 degrees we can FIGURE out SIN Theta = Cos (90 - Theta) and Cos Theta = Sin (90 - Theta).

49.

Sin(90-theta) + cos(90-theta)=

Answer»

Step-by-step explanation:

All TRIANGLES have 3 ANGLES that ADD to 180 degrees. Therefore, if one angle is 90 degrees we can FIGURE out SIN Theta = Cos (90 - Theta) and Cos Theta = Sin (90 - Theta).

Discussion

50.	If one of the roots of the equation5 for + 2x-3=0 is 2. then find k.
Answer» PLEASE WRITE the question properly then I will give you ANSWER

50.

If one of the roots of the equation5 for + 2x-3=0 is 2. then find k.

Answer»

PLEASE WRITE the question properly then I will give you ANSWER

Discussion

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