332354 + Interview Questions in Secondary School in Math

1.	What two numbers whose sum is 5 and product is -450
Answer» ANSWER: ? Step-by-step EXPLANATION: ....... .... .. .... ...

1.

What two numbers whose sum is 5 and product is -450

Answer»

ANSWER:

?

Step-by-step EXPLANATION:

.......

....

..

....

...

Discussion

2.	What s the probability of getting aone number from the natural numberless than 100?
Answer» Answer: 1/100 Step-by-step EXPLANATION: Khudka DIMAAG LAGA L

2.

What s the probability of getting aone number from the natural numberless than 100?

Answer»

Answer:

1/100

Step-by-step EXPLANATION:

Khudka DIMAAG LAGA L

Discussion

3.	Multiply the binomials:(2x + 5) and (4x - 3)
Answer» Answer: hii Step-by-step EXPLANATION: = 8 {X}^{2} - 6x + 20X - 15=8x2−6x+20x−15 = 8 {x}^{2} + 14x - 15=8x2+14x−15

3.

Multiply the binomials:(2x + 5) and (4x - 3)

Answer»

Answer:

hii

Step-by-step EXPLANATION:

= 8 {X}^{2} - 6x + 20X - 15=8x2−6x+20x−15

= 8 {x}^{2} + 14x - 15=8x2+14x−15

Discussion

4.	(لهfurathattheملعقتيمطعلداومعنياط 10Realceachفلقد170 andremiandee of 10ccaseun
Answer» ANSWER: I don't KNOW answer of this QUESTION

4.

(لهfurathattheملعقتيمطعلداومعنياط 10Realceachفلقد170 andremiandee of 10ccaseun

Answer»

ANSWER:

I don't KNOW answer of this QUESTION

Discussion

5.	Factorise 27a^3 - 2 root 2b^3
Answer» ANSWER: $27 {a}^{3} - 2 \sqrt{2} {b}^{3} =$ $(3a) {}^{3} - ( \sqrt{2} b) {}^{3} =$ $(3a - \sqrt{2} b)((3a) {}^{2} + 3a \times \sqrt{2} b + ( \sqrt{2} b) {}^{2} ) =$ $(3a - \sqrt{2} b)(9 {a}^{2} + 3 \sqrt{2} ab + 2 {b}^{2} )$ Step-by-step EXPLANATION: ${x}^{3} - {y}^{3} = (x - y)( {x}^{2} + xy + {y}^{2} )$

5.

Factorise 27a^3 - 2 root 2b^3

Answer»

ANSWER:

$27 {a}^{3} - 2 \sqrt{2} {b}^{3} =$

$(3a) {}^{3} - ( \sqrt{2} b) {}^{3} =$

$(3a - \sqrt{2} b)((3a) {}^{2} + 3a \times \sqrt{2} b + ( \sqrt{2} b) {}^{2} ) =$

$(3a - \sqrt{2} b)(9 {a}^{2} + 3 \sqrt{2} ab + 2 {b}^{2} )$

Step-by-step EXPLANATION:

${x}^{3} - {y}^{3} = (x - y)( {x}^{2} + xy + {y}^{2} )$

Discussion

6.	Find the area and perimeter d=20cm
Answer» $\text{[math]}$ PERIMETER of SQUARE =20cm∴4a=20 a=5 area of square =a 2 =5 2 =25CM 2¡

6.

Find the area and perimeter d=20cm

Answer»

$\text{[math]}$

PERIMETER of SQUARE =20cm∴4a=20

a=5

area of square =a

2

=5 2

=25CM 2¡

Discussion

7.	The ratio of sum of n terms of two APs is (7n+1):(4n+27). Find the ratio of their 5th terms
Answer» Answer: 64/63 Step-by-step explanation: s1/s2 = (n/2 ( 2a +(n-1)d))/ (n/2 (2A+(n-1)D)) DIVIDING by TWO on both SIDES (a+(n-1)d/2)/(A+(n-1)d/2) = 7n+1/4n+23 PUT 9 to get the answer. please mark as brainleist

7.

The ratio of sum of n terms of two APs is (7n+1):(4n+27). Find the ratio of their 5th terms

Answer»

Answer:

64/63

Step-by-step explanation:

s1/s2 = (n/2 ( 2a +(n-1)d))/ (n/2 (2A+(n-1)D))

DIVIDING by TWO on both SIDES (a+(n-1)d/2)/(A+(n-1)d/2) = 7n+1/4n+23 PUT 9 to get the answer.

please mark as brainleist

Discussion

8.	Integral of x-1/(x-2)½
Answer» SEE the PHOTO ATTACHED for SOLUTION

Discussion

9.	14. Two cones have their heights in the ratio 1:3 and the radii of theirbases in the ratio 3: 1. Show that their volumes are in the ratio 3 : 1
Answer» this is your ANSWER...

Discussion

10.	SimplifyCos theta/sin(90-theta)+cos(90-theta)/sec(90-theta)-3tan square 30 degrees
Answer» I don’t KNOW the ANSWER SORRY

Discussion

11.	1. Solve the following quadratic equations byfactorisation method :(i) x^2-5x-36=0
Answer» ANSWER: x=9,−4 I HOPE this HELPED

11.

1. Solve the following quadratic equations byfactorisation method :(i) x^2-5x-36=0

Answer»

ANSWER:

x=9,−4

I HOPE this HELPED

Discussion

12.	If the sum of n terms of a G.P. is 255 and nth term is 128 and common ratio is 2, then(A) 1st term is 1(B) S2 = 3(C) S2= 7(D) None of these
Answer»

Discussion

13.	Find only three rational no.between 2/3 and 3/4.
Answer» ANSWER: ADD 1/24,1/48,1/72 to 2/3

13.

Find only three rational no.between 2/3 and 3/4.

Answer»

ANSWER:

ADD 1/24,1/48,1/72 to 2/3

Discussion

14.	Write the complement of an angle with measure 2y⁰
Answer» Answer: I GOT 1000 POINTS form this GAME i LIKE it

14.

Write the complement of an angle with measure 2y⁰

Answer»

Answer:

I GOT 1000 POINTS form this GAME i LIKE it

Discussion

15.	If sum of digit on a number is divisble by 9 than 9 then is divided by ?
Answer» Answer: uhvsfsisnbbsisbsusjshs I love you have any QUESTIONS or concerns PLEASE visit the MEETING on THURSDAY ☺️

15.

If sum of digit on a number is divisble by 9 than 9 then is divided by ?

Answer»

Answer:

uhvsfsisnbbsisbsusjshs I love you have any QUESTIONS or concerns PLEASE visit the MEETING on THURSDAY ☺️

Discussion

16.	Please answer my question. I will also mark as Brainliest.
Answer» \|-------\|-------\|--------\|--------\|--------\|-------\|---------\|--------\| 0/7 1/7 2/7 3/7 4/7 5/7 6/7 7/7 ____

16.

Please answer my question. I will also mark as Brainliest.

Answer»

|-------|-------|--------|--------|--------|-------|---------|--------|

0/7 1/7 2/7 3/7 4/7 5/7 6/7 7/7

____

Discussion

17.	What we get after multiplying 7/9 by the reciprocal of -16/38?
Answer» ANSWER: 14/9 Step-by-step explanation: 7/9 × -16/38 Reciprocal:- = 7/9× 38/16 cutting:- = 7/9 × 16/8 = 7/9 × 2/1 = 14/9 HOPE IT WILL HELP YOU MARK AS BRAINLIEST

17.

What we get after multiplying 7/9 by the reciprocal of -16/38?

Answer»

ANSWER:

14/9

Step-by-step explanation:

7/9 × -16/38

Reciprocal:-

= 7/9× 38/16

cutting:-

= 7/9 × 16/8

= 7/9 × 2/1

= 14/9

HOPE IT WILL HELP YOU

MARK AS BRAINLIEST

Discussion

18.	Subtract m2 + 2mn + n2 from m2 – 6m2 + 8mn - 8 subtract this plz as soon as possible
Answer» ANSWER: -6m^2 - 6MN +n^2 +8 Step-by-step EXPLANATION:

18.

Subtract m2 + 2mn + n2 from m2 – 6m2 + 8mn - 8 subtract this plz as soon as possible

Answer»

ANSWER:

-6m^2 - 6MN +n^2 +8

Step-by-step EXPLANATION:

Discussion

19.	The value of tan 30 divided by cot 60 is
Answer» ANSWER: $\tan(30) \div \cot(60) = \tan(30) \div \tan(30) = 1$

19.

The value of tan 30 divided by cot 60 is

Answer»

ANSWER:

$\tan(30) \div \cot(60) = \tan(30) \div \tan(30) = 1$

Discussion

20.	By what number should (15)–¹ be divided so that quotient may be equal to (–5)–¹ ?
Answer» LET X be DIVIDED So (1/15 )/x = -1/5 X= -1/5x 15 = -3

Discussion

21.	How did u get base 5 and hyp13 and x10
Answer» ANSWER: by USING PYTHAGORAS THEOREM

21.

How did u get base 5 and hyp13 and x10

Answer»

ANSWER:

by USING PYTHAGORAS THEOREM

Discussion

22.	242/1000 change it into decimal point
Answer» ANSWER: 0.242 this is write answer Step-by-step explanation: And FOLLOW me JAI RAJPUTANA

22.

242/1000 change it into decimal point

Answer»

ANSWER:

0.242 this is write answer

Step-by-step explanation:

And FOLLOW me

JAI RAJPUTANA

Discussion

23.	What is the complete the square of x^2 + 6x = -7
Answer» $\green{\bold{\underline{ ☆ UPSC-ASPIRANT ☆} }}$ $\red{\bold{\underline{\underline{QUESTION:-}}}}$ Q:what is the complete the SQUARE of x^2 + 6x = -7 $\huge\tt\underline\blue{ANSWER }$ ------>>>>Here is your answer<<<<-------- ➪This equation can't be solved by COMPLETING the square method because coefficient of X square is 1 and when we DIVIDE it to the whole equation we GET the same equation. ➪we solve simple by factorisation method:- $➪ {x}^{2} + 6x + 7 = 0$ $➪ {x}^{2} + 7x - x + 7 = 0$ $➪x(x + 7) + 1(x + 7)$ $➪(x + 1)(x + 7)$ $➪x = - 1 \: and \: - 7$ HOPE IT HELPS YOU.. _____________________ Thankyou:)

23.

What is the complete the square of x^2 + 6x = -7

Answer»

$\green{\bold{\underline{ ☆ UPSC-ASPIRANT ☆} }}$

$\red{\bold{\underline{\underline{QUESTION:-}}}}$

Q:what is the complete the SQUARE of x^2 + 6x = -7

$\huge\tt\underline\blue{ANSWER }$

------>>>>Here is your answer<<<<--------

➪This equation can't be solved by COMPLETING the square method because coefficient of X square is 1 and when we DIVIDE it to the whole equation we GET the same equation.

➪we solve simple by factorisation method:-

$➪ {x}^{2} + 6x + 7 = 0$

$➪ {x}^{2} + 7x - x + 7 = 0$

$➪x(x + 7) + 1(x + 7)$

$➪(x + 1)(x + 7)$

$➪x = - 1 \: and \: - 7$

HOPE IT HELPS YOU..

_____________________

Thankyou:)

Discussion

24.	Plz solve this...I will mark u as a brillinaist..
Answer» ANSWER: AP KONSE STANDARD me HO

24.

Plz solve this...I will mark u as a brillinaist..

Answer»

ANSWER:

AP KONSE STANDARD me HO

Discussion

25.	The highest power of the variable in a point linear equation is
Answer» ANSWER: 999999999999999999999999999999....... PLEASE MARK my answer as BRAINLYLIST

25.

The highest power of the variable in a point linear equation is

Answer»

ANSWER:

999999999999999999999999999999.......

PLEASE MARK my answer as BRAINLYLIST

Discussion

26.	The dgree of polynomial √2x2-3x+1 is √2
Answer» Answer: It is a 2 DEGREE POLYNOMIAL please mark it BRAINLIEST

26.

The dgree of polynomial √2x2-3x+1 is √2

Answer»

Answer:

It is a 2 DEGREE POLYNOMIAL

please mark it BRAINLIEST

Discussion

27.	The zeroes of polinomialx^2- 2x-8 is what
Answer» ANSWER: X=(-2,4) are the ZEROES of the POLYNOMIAL

27.

The zeroes of polinomialx^2- 2x-8 is what

Answer»

ANSWER:

X=(-2,4) are the ZEROES of the POLYNOMIAL

Discussion

28.	Find x & y in 657x +963y
Answer» your question is not full there will be SOMETHING equal to on the right SIDE of the EQUATION as WELL .

28.

Find x & y in 657x +963y

Answer»

your question is not full there will be SOMETHING equal to on the right SIDE of the EQUATION as WELL

.

Discussion

29.	I have to Factorise : 32−7−6
Answer» ANSWER: = 19 Step-by-step EXPLANATION: = 32-7-6 = 32 - 13 = 19

29.

I have to Factorise : 32−7−6

Answer»

ANSWER:

= 19

Step-by-step EXPLANATION:

= 32-7-6

= 32 - 13

= 19

Discussion

30.	Volume of cylinder is 44 cubic centimetres and radius is 2 centimetres.find it's whole surface area.
Answer» Answer: = 69.12cm² Step-by-step explanation: Given, volume of the cylinder(v) = 44cm³ radius (R) = 2cm from FORMULA of volume, v = πr²h or, 44 = 3.14 × 2²×H or, 44 = 12.56 × h or, 44/12.56 = h ∴ h = 3.50cm To find: TOTAL surface area (TAS)= ? from formula, TSA = 2πr (r+h) or, = 2× 3.14 × 2 (2+ 3.50) = 12.56 × 5.50 ∴ = 69.12cm²

30.

Volume of cylinder is 44 cubic centimetres and radius is 2 centimetres.find it's whole surface area.

Answer»

Answer:

= 69.12cm²

Step-by-step explanation:

Given,

volume of the cylinder(v) = 44cm³

radius (R) = 2cm

from FORMULA of volume,

v = πr²h

or, 44 = 3.14 × 2²×H

or, 44 = 12.56 × h

or, 44/12.56 = h

∴ h = 3.50cm

To find:

TOTAL surface area (TAS)= ?

from formula,

TSA = 2πr (r+h)

or, = 2× 3.14 × 2 (2+ 3.50)

= 12.56 × 5.50

∴ = 69.12cm²

Discussion

31.	If x minus one by x is equal to 5 then the value of x cube minus one by x cube is
Answer» Step-by-step explanation: Given: x minus one by x is equal to 5 To find: Find the value of x cube minus one by x cube Solution: From given, we have, x minus one by x is equal to 5 x - 1/x = 5 we use the formula, (a - b)³ = a³ - b³ - 3ab (a - b) (x - 1/x)³ = x³ - 1/x³ - 3 × x × 1/x (x - 1/x) (x - 1/x)³ = x³ - 1/x³ - 3 (x - 1/x) using the given value, we have, 5³ = x³ - 1/x³ - 3 (5) 125 = x³ - 1/x³ - 15 125 + 15 = x³ - 1/x³ ∴ x³ - 1/x³ = 140 Therefore, the value of x cube minus one by x cube is 140 The Brain Helper Not sure about the answer? SEE NEXT ANSWERS Newest Questions Holly says 4.131131113... is a rational NUMBER. Which of the following BEST describes whether Holly is correct and why?? Holly is correct. Repeating d A firm borrows Rs 10.000 from the bank at 10% compounded semi anually, if no repayments aremade How much the repay after 4 year? Justify your answer Sec A Cos A = Please solve this answer is 7. Find the product of $3 \sqrt{2 } and \: 3 \sqrt{24}$ Explain chapter 1 of class 10 English If 3, 3 upon 4 is the midpoint of the line segment joining the point cake 0 and 7.2 then find the value of k प्रथम 10 अभाज्य संख्याओं ki madhiyika btao A prime number has___factors Any one want to PRESS my boobs Previous Next Ask your question WE'RE IN THE KNOW This site is using cookies under cookie policy. You can specify CONDITIONS of storing and accessing cookies in your browser Company About us Blog Careers Terms of Use Privacy Policy Cookie Policy Community Brainly Community Brainly for Schools & Teachers Community Guidelines Content Guidelines Honor Code Become a Volunteer Help Signup FAQ Safety Center Responsible DISCLOSURE Agreement Contact Us Brainly.in Get the Brainly App Download Android App SCAN & SOLVE IN-APP Read more on Brainly.in - brainly.in/question/14515294#readmore

31.

If x minus one by x is equal to 5 then the value of x cube minus one by x cube is

Answer»

Step-by-step explanation:

Given:

x minus one by x is equal to 5

To find:

Find the value of x cube minus one by x cube

Solution:

From given, we have,

x minus one by x is equal to 5

x - 1/x = 5

we use the formula,

(a - b)³ = a³ - b³ - 3ab (a - b)

(x - 1/x)³ = x³ - 1/x³ - 3 × x × 1/x (x - 1/x)

(x - 1/x)³ = x³ - 1/x³ - 3 (x - 1/x)

using the given value, we have,

5³ = x³ - 1/x³ - 3 (5)

125 = x³ - 1/x³ - 15

125 + 15 = x³ - 1/x³

∴ x³ - 1/x³ = 140

Therefore, the value of x cube minus one by x cube is 140

The Brain Helper

Not sure about the answer?

SEE NEXT ANSWERS

Newest Questions

Holly says 4.131131113... is a rational NUMBER. Which of the following BEST describes whether Holly is correct and why?? Holly is correct. Repeating d

A firm borrows Rs 10.000 from the bank at 10% compounded semi anually, if no repayments aremade How much the repay after 4 year?

Justify your answer Sec A Cos A =

Please solve this answer is 7.

Find the product of $3 \sqrt{2 } and \: 3 \sqrt{24}$

Explain chapter 1 of class 10 English

If 3, 3 upon 4 is the midpoint of the line segment joining the point cake 0 and 7.2 then find the value of k

प्रथम 10 अभाज्य संख्याओं ki madhiyika btao

A prime number has___factors

Any one want to PRESS my boobs

Ask your question

WE'RE IN THE KNOW

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Discussion

32.	X+1/x=root 2 find value of x²+1/x²
Answer» $Given \: x + \frac{1}{x} = \sqrt{2} \: --(1)$ /* On SQUARING both SIDES of EQUATION (1), we GET*/ $\implies \Big( x + \frac{1}{x}\Big)^{2} = (\sqrt{2})^{2}$ $\implies x^{2} + \frac{1}{x^{2}} + 2 \times x \times \frac{1}{x} = 2$ $\implies x^{2} + \frac{1}{x^{2}} + 2 = 2$ $\implies x^{2} + \frac{1}{x^{2}} = 2 - 2$ $\implies x^{2} + \frac{1}{x^{2}} = 0$ THEREFORE., $\red { The \: value \:of \: x^{2} + \frac{1}{x^{2}} }\green{= 0}$ •••♪

32.

X+1/x=root 2 find value of x²+1/x²

Answer»

$Given \: x + \frac{1}{x} = \sqrt{2} \: --(1)$

/* On SQUARING both SIDES of EQUATION (1), we GET*/

$\implies \Big( x + \frac{1}{x}\Big)^{2} = (\sqrt{2})^{2}$

$\implies x^{2} + \frac{1}{x^{2}} + 2 \times x \times \frac{1}{x} = 2$

$\implies x^{2} + \frac{1}{x^{2}} + 2 = 2$

$\implies x^{2} + \frac{1}{x^{2}} = 2 - 2$

$\implies x^{2} + \frac{1}{x^{2}} = 0$

THEREFORE.,

$\red { The \: value \:of \: x^{2} + \frac{1}{x^{2}} }\green{= 0}$

•••♪

Discussion

33.	8-[2so8 divide [34 -[36 -18 divide 9 multiply 8]]]
Answer» Answer: Step-by-step explanation: The PRIME Factorization of 18252 is: 18252= 2 × 2 × 3 × 3 × 3 × 13 × 13 • In EXPONENTIAL Form: 18252= 2² × 3³ × 13² (Here multip

33.

8-[2so8 divide [34 -[36 -18 divide 9 multiply 8]]]

Answer»

Answer:

Step-by-step explanation:

The PRIME Factorization of 18252 is:

18252= 2 × 2 × 3 × 3 × 3 × 13 × 13

• In EXPONENTIAL Form:

18252= 2² × 3³ × 13²

(Here multip

Discussion

34.	If a=b^x, b=c^y and a=c^z is it true that y=x+z
Answer» Answer: Step-by-step explanation: SIX SQUARE faces, facets or SIDES, with THREE meeting at each VERTEX. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 6 faces, 12 edges, and 8 vertices.

34.

If a=b^x, b=c^y and a=c^z is it true that y=x+z

Answer»

Answer:

Step-by-step explanation:

SIX SQUARE faces, facets or SIDES, with THREE meeting at each VERTEX. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 6 faces, 12 edges, and 8 vertices.

Discussion

35.	An irrational number between 1/2 and 3/4
Answer» EXPLAINED :1/2×2/2=2/4.3/4×1/4=3/4 then we will GET 2/4 and 3/4

Discussion

36.	Class 8 expoments and power 3^3x+3 = 9^x+4^=exponents
Answer» ANSWER: 6591x Your Answer MATE......

36.

Class 8 expoments and power 3^3x+3 = 9^x+4^=exponents

Answer»

ANSWER:

6591x

Your Answer MATE......

Discussion

37.	1/5 liter of milk cost Rs. 5 How much would 13/2 liter of milk cost
Answer» ANSWER: COST of 1/5 litre of milk = 5/- cost of 1 litre of milk = ? 1/5 ----------- 5/- 1----------------?(X) X = 55/1 X = 25/- Cost of 1 litre milk = 25/- Cost of 13/2 litre = 25 13 /2 = 162.5/-

37.

1/5 liter of milk cost Rs. 5 How much would 13/2 liter of milk cost

Answer»

ANSWER:

COST of 1/5 litre of milk = 5/-

cost of 1 litre of milk = ?

1/5 ----------- 5/-

1----------------?(X)

X = 5*5/1

X = 25/-

Cost of 1 litre milk = 25/-

Cost of 13/2 litre =

25 * 13 /2 = 162.5/-

Discussion

38.	0.6 ÷ 300 evaluate the following
Answer» ANSWER: Step-by-step explanation: 0.002 is the answer

38.

0.6 ÷ 300 evaluate the following

Answer»

ANSWER:

Step-by-step explanation:

0.002 is the answer

Discussion

39.	If two supplementary angles are in the ratio 1:2 find the angles
Answer» Answer: one ANGLE is of 60 and SECOND angle is of 120

39.

If two supplementary angles are in the ratio 1:2 find the angles

Answer»

Answer:

one ANGLE is of 60

and SECOND angle is of 120

Discussion

40.	If x equal to 5 root 2 - 7 then find the value of x cube - 1 by x cube
Answer» Answer: 1 - 1/x^3 = 1 - 985root 2 + 1392 = - ( 985root2 + 1392)

40.

If x equal to 5 root 2 - 7 then find the value of x cube - 1 by x cube

Answer»

Answer:

1 - 1/x^3 = 1 - 985root 2 + 1392

= - ( 985root2 + 1392)

Discussion

41.	What will be the remainder if 7^15 is divided by 5
Answer» Answer: 3 Step-by-step explanation: 7 has a CYCLICITY of 4 at its last DIGIT(unit digit) varying 7,9,3,1 respectively..., so 7^15 means the last digit would be 3(since,15/4 gives REMAINDER 3), Therefore the remainder if 7^15 is divided by 5 is 3. Hope it helps u...

41.

What will be the remainder if 7^15 is divided by 5

Answer»

Answer:

3

Step-by-step explanation:

7 has a CYCLICITY of 4 at its last DIGIT(unit digit) varying 7,9,3,1 respectively...,

so 7^15 means the last digit would be 3(since,15/4 gives REMAINDER 3),

Therefore the remainder if 7^15 is divided by 5 is 3.

Hope it helps u...

Discussion

42.	in a group of children ,each child gives a gift to every other child .if the number of gifts is 2450 ,then the number of children is
Answer» Answer: 50 Step-by-step EXPLANATION: LET the number of children be X. so, it makes the number of gifts per children have = (x - 1) given number of gifts = 2450 As Per Condition given in the condition, x(x - 1) = 2450 ⇒ x² - x = 2450 ⇒ x² - x - 2450 = 0 ⇒ x² - 50x +49x - 2450 = 0 ⇒ x(x - 50) + 49(x - 50) = 0 ⇒ (x - 50)(x + 49) = 0 ⇒ x = 50, -49 number of children cannot be negative. so, number of children = x = 50

42.

in a group of children ,each child gives a gift to every other child .if the number of gifts is 2450 ,then the number of children is

Answer»

Answer:

50

Step-by-step EXPLANATION:

LET the number of children be X.

so, it makes the number of gifts per children have = (x - 1)

given number of gifts = 2450

As Per Condition given in the condition,

x(x - 1) = 2450

⇒ x² - x = 2450

⇒ x² - x - 2450 = 0

⇒ x² - 50x +49x - 2450 = 0

⇒ x(x - 50) + 49(x - 50) = 0

⇒ (x - 50)(x + 49) = 0

⇒ x = 50, -49

number of children cannot be negative.

so, number of children = x = 50

Discussion

43.	10term is -4 and 22nd term is -16. Find 29 term
Answer» Step-by-step explanation: 2ND term=2 4th term=8 a+(n−1)d=2 ⇒a+a=2(2nd term)-------------(1) a+(n−1)d=8 ⇒a+3d=8-------------------(2) a+d=2 a+3d=8 On SUBSTRACTION:- −2d=−6 ⇒d=3 Putting d in EQUATION(1) a=−1 So, 51st term=(−1)+(51−1)3=149

43.

10term is -4 and 22nd term is -16. Find 29 term

Answer»

Step-by-step explanation:

2ND term=2

4th term=8

a+(n−1)d=2

⇒a+a=2(2nd term)-------------(1)

a+(n−1)d=8

⇒a+3d=8-------------------(2)

a+d=2

a+3d=8

On SUBSTRACTION:- −2d=−6

⇒d=3

Putting d in EQUATION(1)

a=−1

So, 51st term=(−1)+(51−1)3=149

Discussion

44.	How many numbers between 50 to 150 are divisible by 8
Answer» Answer: 12 Step-by-step explanation: 56,64,72,80,88,96,104,112,120,128,136,144

44.

How many numbers between 50 to 150 are divisible by 8

Answer»

Answer:

12

Step-by-step explanation:

56,64,72,80,88,96,104,112,120,128,136,144

Discussion

45.	Pothe areasfindthe ratio of8.4) Diagonals of a trapesium ABCO with AB VDC intersects each otherat the point o Ef AB= 200,of triangle AB and coo.Sol! -डायगोनल ऑफ़ ए ट्रेपीजियम एबीसीडी विद एबी पायलट ई सी ई ड सेक्टर 48 द प्वाइंट ओ एस इज इक्वल टू 2 डिग्री फाइंड द रेश्यो ऑफ द एरिया ऑफ ट्रायंगल ए बी सी डी
Answer» OK I will GIVE U and in 19 MINUTES OK byy

Discussion

46.	Please help solve this question
Answer» *PLEASE* *MARK* my *ANSWER* as *BRAINLYLIST*.

Discussion

47.	Meeras mother is four times as old as meera. After 5 years,her mother will be three times as old as she will be then. What are their present ages?
Answer» ★ Given : MEERA's mother is four TIMES as old as meera. After 5 years,her mother will be three times as old as she will be then. ★ To Find : The present ages of Meera and her mother. ★ ${\underline{\underline{\large{\bold{\red{Solution:-}}}}}}$ • Let the present age of Meera be X years. • Meera's mother is four times as old as Meera. So, Her age will be 4x years. • After 5 years the age of Meera will be ( x + 5 ) years. • According to the question, After 5 years, the age of Meera's mother will be = ( 4x + 5 ) years. According to the question, $(4x + 5) = 3(x + 5) \\ \\ = > 4x + 5 = 3x + 15 \\ \\ = > 4x - 3x = 15 - 5 \\ \\ = > x = 10$ Therefore, the present age of Meera's mother is (10 × 4 ) = 40 years. $\therefore$ The age of Meera and her mother is RESPECTIVELY 10 years and 40 years.

47.

Meeras mother is four times as old as meera. After 5 years,her mother will be three times as old as she will be then. What are their present ages?

Answer»

★ Given :

MEERA's mother is four TIMES as old as meera.
After 5 years,her mother will be three times as old as she will be then.

★ To Find :

The present ages of Meera and her mother.

★ ${\underline{\underline{\large{\bold{\red{Solution:-}}}}}}$

• Let the present age of Meera be X years.

• Meera's mother is four times as old as Meera. So, Her age will be 4x years.

• After 5 years the age of Meera will be ( x + 5 ) years.

• According to the question,

After 5 years, the age of Meera's mother will be = ( 4x + 5 ) years.

According to the question,

$(4x + 5) = 3(x + 5) \\ \\ = > 4x + 5 = 3x + 15 \\ \\ = > 4x - 3x = 15 - 5 \\ \\ = > x = 10$

Therefore, the present age of Meera's mother is (10 × 4 ) = 40 years.

$\therefore$ The age of Meera and her mother is RESPECTIVELY 10 years and 40 years.

Discussion

48.	Application : 33. Ramenbabu deposits 3,70,000 in total in three banks, The rates ofsimple interest per annum in three banks are 4%,5% and 6% respectively, after lyr., the totalinterests in three banks are equal. Let us calculate the principals he has deposited in cach ofthe three banks.
Answer» Step-by-step EXPLANATION: HOPE the above ANSWER will HELP you

48.

Application : 33. Ramenbabu deposits 3,70,000 in total in three banks, The rates ofsimple interest per annum in three banks are 4%,5% and 6% respectively, after lyr., the totalinterests in three banks are equal. Let us calculate the principals he has deposited in cach ofthe three banks.

Answer»

Step-by-step EXPLANATION:

HOPE the above ANSWER will HELP you

Discussion

49.	In what ratio does the point (1, 12) divide the join of (5, 6) and (7, 3)?
Answer» Let the POINT (1, 12) divide the line segment joining (5, 6) and (7, 3) in the ratio m : n. Here the point (1, 12) divides the line segment EXTERNALLY. If a point $(x,\ y)$ divides a line segment joining the points $(x_1,\ y_1)$ and $(x_2,\ y_2)$ in the ratio m : n externally, then by section formula, $\longrightarrow x=\dfrac{mx_2-nx_1}{m-n}$ So here, $\longrightarrow 1=\dfrac{7m-5n}{m-n}$ $\longrightarrow 7m-5n=m-n$ $\longrightarrow 6m=4n$ $\longrightarrow \dfrac{m}{n}=\dfrac{2}{3}$ $\longrightarrow\underline{\underline{m:n=2:3}}$ Hence 2:3 is the ANSWER.

49.

In what ratio does the point (1, 12) divide the join of (5, 6) and (7, 3)?

Answer»

Let the POINT (1, 12) divide the line segment joining (5, 6) and (7, 3) in the ratio m : n.

Here the point (1, 12) divides the line segment EXTERNALLY.

If a point $(x,\ y)$ divides a line segment joining the points $(x_1,\ y_1)$ and $(x_2,\ y_2)$ in the ratio m : n externally, then by section formula,

$\longrightarrow x=\dfrac{mx_2-nx_1}{m-n}$

So here,

$\longrightarrow 1=\dfrac{7m-5n}{m-n}$

$\longrightarrow 7m-5n=m-n$

$\longrightarrow 6m=4n$

$\longrightarrow \dfrac{m}{n}=\dfrac{2}{3}$

$\longrightarrow\underline{\underline{m:n=2:3}}$

Hence 2:3 is the ANSWER.

Discussion

50.	22/7 it's racional or iracional
Answer» ANSWER: It is a RATIONAL NUMBER.

50.

22/7 it's racional or iracional

Answer»

ANSWER:

It is a RATIONAL NUMBER.

Discussion

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