98971 + Interview Questions in Primary School in Math

1.	PDEbcn219098cmBin the figure line pais Parallel to the line AB -ABesom, Acabeme
Answer» ANSWER: HENDRIK to the INBOX FOLDER and I will be in the MORNING and I will be

1.

PDEbcn219098cmBin the figure line pais Parallel to the line AB -ABesom, Acabeme

Answer»

ANSWER:

HENDRIK to the INBOX FOLDER and I will be in the MORNING and I will be

Discussion

2.	Test the divisibility of the following nu(1) 4334(11) 8372(iv) 137269(v) 9013 Is 4334 is divisible by 11
Answer» Step-by-step EXPLANATION: YES add digits on odd places and even places then SUBTRACT both 4+3=7 4+3=7 7-7= 0 so 4334 is DIVISIBLE by 11

2.

Test the divisibility of the following nu(1) 4334(11) 8372(iv) 137269(v) 9013 Is 4334 is divisible by 11

Answer»

Step-by-step EXPLANATION:

YES

add digits on odd places and even places then SUBTRACT both

4+3=7

7-7= 0

so 4334 is DIVISIBLE by 11

Discussion

3.	Prove that (x+y)2 – (x-y)2 = 4xy.tq sis please ans me
Answer» (x+y+x-y)(x+y-x+y) =2x.2y=4xy

3.

Prove that (x+y)2 – (x-y)2 = 4xy.tq sis please ans me

Answer»

(x+y+x-y)(x+y-x+y)

=2x.2y=4xy

Discussion

4.	13. Are the positions of (5, -8) and (-8, 5) is same? Justify your answer.
Answer» ANSWER: YES it is RIGHT I HOPE U LIKE THE ANSWER PLS MARK AS BRAINLIEST

4.

13. Are the positions of (5, -8) and (-8, 5) is same? Justify your answer.

Answer»

ANSWER:

YES it is RIGHT

I HOPE U LIKE THE ANSWER

PLS MARK AS BRAINLIEST

Discussion

5.	An alloy is made up of 60% nickel, 7% iron and the rest with copper. Find the weight of copper in a 200 g sample of the alloy.
Answer» Step-by-step explanation: Nickel = 60% IRON = 7% COPPER = ?? $\rightarrow$ 100% = 60% + 7% + Copper % $\rightarrow$ 100% = 67% + Copper % $\rightarrow$ Copper % = 100% - 67% $\rightarrow$ Copper % = 33 % Copper in alloy = 33% Copper amount = 33% of TOTAL alloy $\rightarrow$ 33% × 200 $\rightarrow$ 33/100 × 200 $\rightarrow$ 66 GRAMS. *Copper is 66 grams in the alloy.*

5.

An alloy is made up of 60% nickel, 7% iron and the rest with copper. Find the weight of copper in a 200 g sample of the alloy.

Answer»

Step-by-step explanation:

Nickel = 60%

IRON = 7%

COPPER = ??

$\rightarrow$ 100% = 60% + 7% + Copper %

$\rightarrow$ 100% = 67% + Copper %

$\rightarrow$ Copper % = 100% - 67%

$\rightarrow$ Copper % = 33 %

Copper in alloy = 33%

Copper amount = 33% of TOTAL alloy

$\rightarrow$ 33% × 200

$\rightarrow$ 33/100 × 200

$\rightarrow$ 66 GRAMS.

Copper is 66 grams in the alloy.

Discussion

6.	the annual salary of Mr Sharma was rupees 3896580 Year 2014 it increased by rupees 384950 Year 2015 what was the salary of MR Sharma in Year 2015
Answer» Step-by-step EXPLANATION: ₹3896580 + ₹384950 = ₹4281530

6.

the annual salary of Mr Sharma was rupees 3896580 Year 2014 it increased by rupees 384950 Year 2015 what was the salary of MR Sharma in Year 2015

Answer»

Step-by-step EXPLANATION:

₹3896580 + ₹384950 = ₹4281530

Discussion

7.	The sum of the two numbers is 51. If one of the numbers exceeds the other by 15, find the smaller number.
Answer» Answer: 33 and 18 Step-by-step EXPLANATION: Take the TWO numbers as x and y x+y=15 x=y+15 (SUBSTITUTE) 2y+15=51 y=18 Therefore x=33 MARK ME AS BRAINLIEST

7.

The sum of the two numbers is 51. If one of the numbers exceeds the other by 15, find the smaller number.

Answer»

Answer:

33 and 18

Step-by-step EXPLANATION:

Take the TWO numbers as x and y

x+y=15

x=y+15 (SUBSTITUTE)

2y+15=51

y=18

Therefore x=33

MARK ME AS BRAINLIEST

Discussion

8.	Arjun borrowed Rs. 500 for his loan in a bank at 5 percentage per annuam. Find the simple interest and sum assured that he pays to the bank.
Answer» <P>ANSWER: $\bold{HERE \: PRINCIPAL (P) = RS. <klux>500</klux>}$ $\bold{RATE \: OF \: INTEREST (R) = 5\%}$ $\bold{TIME (T) = 1 \: YEAR}$ $\bold{SIMPLE \: INTEREST(I) = \frac{p \times r \times t}{100} }$ $\bold{ = \frac{500 \times 5 \times 1}{100} }$ = Rs. 25 AMOUNT( A ) TO BE PAID = P + I = 500 + 25 = Rs. 525 I = Rs. 25; A = Rs. 525 <U>HOPE!! THIS WILL HELP U.

8.

Arjun borrowed Rs. 500 for his loan in a bank at 5 percentage per annuam. Find the simple interest and sum assured that he pays to the bank.

Answer»

<P>ANSWER:

$\bold{HERE \: PRINCIPAL (P) = RS. <klux>500</klux>}$

$\bold{RATE \: OF \: INTEREST (R) = 5\%}$

$\bold{TIME (T) = 1 \: YEAR}$

$\bold{SIMPLE \: INTEREST(I) = \frac{p \times r \times t}{100} }$

$\bold{ = \frac{500 \times 5 \times 1}{100} }$

= Rs. 25

AMOUNT( A ) TO BE PAID = P + I

= 500 + 25

= Rs. 525

I = Rs. 25;

A = Rs. 525

<U>HOPE!! THIS WILL HELP U.

Discussion

9.	Find the remainder of the x²-px²+6x-p is divided by (x-p)
Answer» Step-by-step EXPLANATION: x² = x, x - px² - p, x, x + 6x = 2 ,3,x -p - p, x X ( X + 6 ) -PX ( x + 1 ) ÷ x - p we have to CUT one x and one - p ( x+6) x (x+1)

9.

Find the remainder of the x²-px²+6x-p is divided by (x-p)

Answer»

Step-by-step EXPLANATION:

x² = x, x - px² - p, x, x

+ 6x = 2 ,3,x -p - p, x

X ( X + 6 ) -PX ( x + 1 ) ÷ x - p

we have to CUT one x and one - p

( x+6) x (x+1)

Discussion

10.	Please solve 1st question
Answer» Answer: 5x + 3 = 2X 5x - 2x = -3 3x = -3 X = -1

10.

Please solve 1st question

Answer»

Answer:

5x + 3 = 2X

5x - 2x = -3

3x = -3

X = -1

Discussion

11.	( a - b )2=a2 -b2- 2ab. True or false
Answer» ANSWER: false Step-by-step EXPLANATION: (a-b)²=a2-2ab+b² is RIGHT FORMULA.

11.

( a - b )2=a2 -b2- 2ab. True or false

Answer»

ANSWER:

false

Step-by-step EXPLANATION:

(a-b)²=a2-2ab+b² is RIGHT FORMULA.

Discussion

12.	8378209 round of nearest 100
Answer» Answer: 8378200 is the ROUND of 100

12.

8378209 round of nearest 100

Answer»

Answer:

8378200 is the ROUND of 100

Discussion

13.	4+[3-{64÷2(15-7)}] what is the answer
Answer» Answer: -228 Step-by-step explanation: 4+[3-{64÷2(15-7)}] = 4+[3-{64÷2×8}] =4+[3-{32×8}] =5+[3-336] =5+(-333) =-228

13.

4+[3-{64÷2(15-7)}] what is the answer

Answer»

Answer:

-228

Step-by-step explanation:

4+[3-{64÷2(15-7)}]

= 4+[3-{64÷2×8}]

=4+[3-{32×8}]

=5+[3-336]

=5+(-333)

=-228

Discussion

14.	Prove that (x+y) - (x-y)` = 4xy.please ans me
Answer» not POSSIBLE DEAR pls CROSS CHECK the question

14.

Prove that (x+y) - (x-y)` = 4xy.please ans me

Answer»

not POSSIBLE DEAR pls CROSS CHECK the question

Discussion

15.	Verify this question.
Answer» Step-by-step explanation: this statement is absolutely TRUE as it in COMMUTATIVE property has been USED

15.

Verify this question.

Answer»

Step-by-step explanation:

this statement is absolutely TRUE as it in COMMUTATIVE property has been USED

Discussion

16.	Find the quotient of the following integers(-39) ÷13
Answer» ANSWER: your answer is = -39/13 = -3/1 =-3

16.

Find the quotient of the following integers(-39) ÷13

Answer»

ANSWER:

your answer is

= -39/13

= -3/1

=-3

Discussion

17.	82 x(63) + (+37) (-82)
Answer» ANSWER: -2,132 Step-by-step explanation: 82×(63)+(+37)(-82) 5166+(37)(-82) 5166-3034 =-2132

17.

82 x(63) + (+37) (-82)

Answer»

ANSWER:

-2,132

Step-by-step explanation:

82×(63)+(+37)(-82)

5166+(37)(-82)

5166-3034

=-2132

Discussion

18.	With a sharp tip of the pencil, mark four points on a paper and name themby the letters A.C.P.H. Try to name these points in different ways. One suchway could be this
Answer» ANSWER: Answer The NAMES: ACHP CHPA HPAC PACH APHC PHCA HCAP CAPH

18.

With a sharp tip of the pencil, mark four points on a paper and name themby the letters A.C.P.H. Try to name these points in different ways. One suchway could be this

Answer»

ANSWER:

Answer

The NAMES:

ACHP

CHPA

HPAC

PACH

APHC

PHCA

HCAP

CAPH

Discussion

19.	Find the HCF and LCM of (120, 500) *
Answer» ANSWER: HCF= 30 and LCM= 3000 Step-by-step EXPLANATION:

19.

Find the HCF and LCM of (120, 500) *

Answer»

ANSWER:

HCF= 30 and LCM= 3000

Step-by-step EXPLANATION:

Discussion

20.	51357 round of nearest 100
Answer» ANSWER: NEAREST HUNDRED is 51400 is the nearest hundred to 51357

20.

51357 round of nearest 100

Answer»

ANSWER:

NEAREST HUNDRED is 51400 is the nearest hundred to 51357

Discussion

21.	grandfather is 4 years older than grandmother. lf the age of grandmother is x years,then the age of grandfather is ( ) A)-4 B)4-x c) 4x D)x-4
Answer» Step-by-step explanation: Grandmother = (x) GRANDFATHER is 4 years OLDER than Grandmother. Grandfather = Grandmother's AGE + 4 = x + 4 Grandfather's age is x + 4

21.

grandfather is 4 years older than grandmother. lf the age of grandmother is x years,then the age of grandfather is ( ) A)-4 B)4-x c) 4x D)x-4

Answer»

Step-by-step explanation:

Grandmother = (x)

GRANDFATHER is 4 years OLDER than Grandmother.

Grandfather = Grandmother's AGE + 4

= x + 4

Grandfather's age is x + 4

Discussion

22.	A circular park is surrounded by a 2.5 m wide circular path. If outer circumference of circular path is 66 m, then find the inner circumference of the circular path.
Answer» *CONSIDER* *outer* *path* , 2π R. =. 66 m r. =. 66 / 2π = 10.5 m *Now* *consider* *the* *inner* *path, given* *that* *path is* 2.5 m *wide* , r. = 10.5- 2.5 = 8 m *Now* the *circumference*** = 2πr = 2 π 8 = 50.25 m

22.

A circular park is surrounded by a 2.5 m wide circular path. If outer circumference of circular path is 66 m, then find the inner circumference of the circular path.

Answer»

CONSIDER outer path ,

2π R. =. 66 m

r. =. 66 / 2π

= 10.5 m

Now consider the inner path,

given that path is 2.5 m wide ,

r. = 10.5- 2.5

= 8 m

Now the circumference

= 2πr

= 2 π 8

= 50.25 m

Discussion

23.	(-3)⁵× (-3)² ×(-3)¹ exponential form
Answer» Answer: (-3 ) power ADD 5+2+1 = 8 (-3 ) raised to 8 I HOPE U LIKE THE ANSWER PLS MARK AS BRAINLIST

23.

(-3)⁵× (-3)² ×(-3)¹ exponential form

Answer»

Answer:

(-3 ) power ADD 5+2+1 = 8

(-3 ) raised to 8

I HOPE U LIKE THE ANSWER

PLS MARK AS BRAINLIST

Discussion

24.	(e) Absolute value of a number is denoted by using ____bars.
Answer» Step-by-step EXPLANATION: Absolute value is SYMBOLIZED by vertical bars, as in \|x\|, \|z\|, or \|v\|, and OBEYS certain fundamental properties, such as \|a · b\| = \|a\| · \|b\| and \|a + b\| ≤ \|a\| + \|b\|. A COMPLEX number z is typically represented by an ordered pair (a, b) in the complex plane.

24.

(e) Absolute value of a number is denoted by using ____bars.

Answer»

Step-by-step EXPLANATION:

Absolute value is SYMBOLIZED by vertical bars, as in |x|, |z|, or |v|, and OBEYS certain fundamental properties, such as |a · b| = |a| · |b| and |a + b| ≤ |a| + |b|. A COMPLEX number z is typically represented by an ordered pair (a, b) in the complex plane.

Discussion

25.	(d) The sum and difference of two integers is always an ____
Answer» ANSWER: The sum and DIFFERENCE of two INTEGERS is always an integer

25.

(d) The sum and difference of two integers is always an ____

Answer»

ANSWER:

The sum and DIFFERENCE of two INTEGERS is always an integer

Discussion

26.	417504 round of nearest 100
Answer» Answer: 417500 is ROUND of NEAR 100 of 417504

26.

417504 round of nearest 100

Answer»

Answer:

417500 is ROUND of NEAR 100 of 417504

Discussion

27.	CI30 mFind the area of a rectangular garden 50 m long 25 mwide.
Answer» Answer: 1250 is the answer Step-by-step EXPLANATION:

27.

CI30 mFind the area of a rectangular garden 50 m long 25 mwide.

Answer»

Answer:

1250 is the answer

Step-by-step EXPLANATION:

Discussion

28.	Find rhe sum of 3/-7 and 2/7
Answer» ANSWER: -1/7 is the CORRECT answer.

28.

Find rhe sum of 3/-7 and 2/7

Answer»

ANSWER:

-1/7 is the CORRECT answer.

Discussion

29.	Verify this question
Answer» ANSWER: gghhhgfffffffffffttghh

29.

Verify this question

Answer»

ANSWER:

gghhhgfffffffffffttghh

Discussion

30.	Extra questions:-Q1. Fill in the smallest digit to make the number divisible by :(i) by 3 : 7164__, 32197__(ii) by 3 : 1__43,. 47__05,. __316(iii) by 3 : __428,. 9__52,. 721__(iv) by 9 : 2462__, 91__ __,. 670__ (v) by 9 : 1232__,. 59__16,. 4642__
Answer» The properties of division of 3 and 9 state that if the sum of the digits is divisible by 3 or 9, the number is also divisible by 3 or 9. I) Sum = 18 SINCE 18 is already a MULTIPLE of 3, the missing digit would be 0. Sum = 22 Next multiple of 3 = 24 Hence missing digit = 24-22 = 2 II) 1. ;. 2. ;. 2 III) 1. ; 2. ;. 2 IV) 4. ;. 8. (one blank) or 1 and 7 (two blank) ; 5 V) 1. ;. 6. ;. 2 Hope you got it! Please mark as brainliest!✨

30.

Extra questions:-Q1. Fill in the smallest digit to make the number divisible by :(i) by 3 : 7164, 32197(ii) by 3 : 143,. 4705,. 316(iii) by 3 : 428,. 952,. 721(iv) by 9 : 2462, 91 ,. 670 (v) by 9 : 1232,. 5916,. 4642__

Answer»

The properties of division of 3 and 9 state that if the sum of the digits is divisible by 3 or 9, the number is also divisible by 3 or 9.

I) Sum = 18

SINCE 18 is already a MULTIPLE of 3, the missing digit would be 0.

Sum = 22

Next multiple of 3 = 24

Hence missing digit = 24-22 = 2

II) 1. ;. 2. ;. 2

III) 1. ; 2. ;. 2

IV) 4. ;. 8. (one blank) or 1 and 7 (two blank) ; 5

V) 1. ;. 6. ;. 2

Hope you got it!

Please mark as brainliest!✨

Discussion

31.	3.The length of a rectangle is 5 times to its breadth. Express in the terms ofratios.
Answer» ANSWER: LENGTH:BREADTH = 5:1 Ratios of length and breadth are ARRANGED in 5:1 RATIO

31.

3.The length of a rectangle is 5 times to its breadth. Express in the terms ofratios.

Answer»

ANSWER:

LENGTH:BREADTH = 5:1

Ratios of length and breadth are ARRANGED in 5:1 RATIO

Discussion

32.	Pls help with this ok
Answer» ANSWER: OK Step-by-step explanation: 5

32.

Pls help with this ok

Answer»

ANSWER:

OK

Step-by-step explanation:

5

Discussion

33.	(c) On number line, integers are arranged inorder.
Answer» ANSWER: ASCENDING from LEFT to RIGHT and DESCENDING from right to left.

33.

(c) On number line, integers are arranged inorder.

Answer»

ANSWER:

ASCENDING from LEFT to RIGHT and DESCENDING from right to left.

Discussion

34.	51357 nearest 100 with full method
Answer» Answer: 51,400 is the answer Step-by-step EXPLANATION:

34.

51357 nearest 100 with full method

Answer»

Answer:

51,400 is the answer

Step-by-step EXPLANATION:

Discussion

35.	Mohan wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is 10,500 m² and the perpendicular distance between the two parallel sides is 100 m, find the length of theside along the river.
Answer» ANSWER: Let the parallel sides of the trapezium-shaped field be ′ X ′ MAND ′ 2x ′ m. Let a=x and b=2x and h=100m Then, its AREA. = 2 1 (a+b)×hm 2 = 2 1 (x+2x)×100m 2 =50×3xm 2 =150xm 2 But it is given that the area of the field is 10500m 2 ∴150x=10500 ⇒x= 150 10500 =70 ∴ The length of the side along the river is 2×70, i.e., 140m.

35.

Mohan wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is 10,500 m² and the perpendicular distance between the two parallel sides is 100 m, find the length of theside along the river.

Answer»

ANSWER:

Let the parallel sides of the trapezium-shaped field be

′

X

′

MAND

′

2x

′

m.

Let a=x and b=2x and h=100m

Then, its AREA.

=

2

1

(a+b)×hm

2

=

2

1

(x+2x)×100m

2

=50×3xm

2

=150xm

2

But it is given that the area of the field is 10500m

2

∴150x=10500

⇒x=

150

10500

=70

∴ The length of the side along the river is 2×70, i.e., 140m.

Discussion

36.	Product of ( a + b + c) ( a - b + c )
Answer» ANSWER: a² - b² + c² ☆ I HOPE IT'S HELPFUL THANK YOU ☆

36.

Product of ( a + b + c) ( a - b + c )

Answer»

ANSWER:

a² - b² + c²

☆ I HOPE IT'S HELPFUL THANK YOU ☆

Discussion

37.	Fill in the smallest digit to make the number divisible by:(i) by 5 : 7164__, 32197__(ii) by 3 : 1__43, 47__05, __316(iii) by 6 : __428, 9__52, 721__(iv) by 4 : 2462__, 91__ __, 670__ (v) by 8 : 1232__, 59__16, 4642__
Answer» i - 0,0 ii - 1, 2, 2 iii - 1, 2, 0 iv - 0, 1, 2, 4 v - 0, 2, 4

37.

Fill in the smallest digit to make the number divisible by:(i) by 5 : 7164, 32197(ii) by 3 : 143, 4705, 316(iii) by 6 : 428, 952, 721(iv) by 4 : 2462, 91 , 670 (v) by 8 : 1232, 5916, 4642__

Answer»

i - 0,0

ii - 1, 2, 2

iii - 1, 2, 0

iv - 0, 1, 2, 4

v - 0, 2, 4

Discussion

38.	Selling price of 1.89 has increased by 8% from last year calculate the selling price
Answer» Answer: Hospital LABORATORIES are attached to a hospital, and perform tests on their patients. ... Some laboratories specialize in Molecular DIAGNOSTIC and cytogenetic testing, in order to provide information regarding DIAGNOSIS and TREATMENT of GENETIC or cancer-related disorders.

38.

Selling price of 1.89 has increased by 8% from last year calculate the selling price

Answer»

Answer:

Hospital LABORATORIES are attached to a hospital, and perform tests on their patients. ... Some laboratories specialize in Molecular DIAGNOSTIC and cytogenetic testing, in order to provide information regarding DIAGNOSIS and TREATMENT of GENETIC or cancer-related disorders.

Discussion

39.	What is the sum of 2x+17 = 20y+ 49
Answer» Step-by-step explanation: (2x² + 3)⁴ Write the power 4 as 2 + 2 = (2x² + 3)^2+2 Using a^m+n = a^m + a^n to expand the EXPRESSION, (2x + 3)² + (2x² + 3)² Using (a + b)² = a² + 2AB + b² to expand the expression, (4x⁴ + 12x² + 9) × (4x⁴ + 12x² + 9) Multiplying the EXPRESSIONS = 16x⁸ + 48x⁶ + 36x⁴ + 48x⁶ + 144x⁴ + 108x² + 38x⁴ + 108x² + 81 Collect the LIKE terms, = 16x⁸ + 96x⁶ + 216x⁴ + 216x² + 81

39.

What is the sum of 2x+17 = 20y+ 49

Answer»

Step-by-step explanation:

(2x² + 3)⁴

Write the power 4 as 2 + 2

= (2x² + 3)^2+2

Using a^m+n = a^m + a^n to expand the EXPRESSION,

(2x + 3)² + (2x² + 3)²

Using (a + b)² = a² + 2AB + b² to expand the expression,

(4x⁴ + 12x² + 9) × (4x⁴ + 12x² + 9)

Multiplying the EXPRESSIONS

= 16x⁸ + 48x⁶ + 36x⁴ + 48x⁶ + 144x⁴ + 108x² + 38x⁴ + 108x² + 81

Collect the LIKE terms,

= 16x⁸ + 96x⁶ + 216x⁴ + 216x² + 81

Discussion

40.	Questions999:27 ::888 ?ansLogic-
Answer» 333 : 9 : 296 hope it HELPS

40.

Questions999:27 ::888 ?ansLogic-

Answer»

333 : 9 : 296

hope it HELPS

Discussion

41.	(b) Integers are ___numbers
Answer» ANSWER: B) INTEGERS are whole numbers

41.

(b) Integers are ___numbers

Answer»

ANSWER:

B) INTEGERS are whole

numbers

Discussion

42.	Fill in the smallest digit to make the number divisible by 3:_428, 9_52, 721_
Answer» Answer: So the smallest digit we need is 1: 1428. 9_52: The number will be divisible by 2. And 9 + 5 + 2 = 16 which is not divisible by 3 but 18 is. This means the smallest digit we need is 2: 9252.

42.

Fill in the smallest digit to make the number divisible by 3:_428, 9_52, 721_

Answer»

Answer:

So the smallest digit we need is 1: 1428. 9_52: The number will be divisible by 2. And 9 + 5 + 2 = 16 which is not divisible by 3 but 18 is. This means the smallest digit we need is 2: 9252.

Discussion

43.	class 9 maths .. number system...slove the above puzzle... don't spam..otherwise it will be reported
Answer» Answer: IRRATIONAL Integers Recurring Rational Ludolph VAN Ceulen (Source:- Internet) Hippasus (Source:- Internet) Two Natural Please MARK me as BRAINLIEST and help me achieve Ace RANK.

43.

class 9 maths .. number system...slove the above puzzle... don't spam..otherwise it will be reported

Answer»

Answer:

IRRATIONAL
Integers
Recurring
Rational
Ludolph VAN Ceulen (Source:- Internet)
Hippasus (Source:- Internet)
Two
Natural

Please MARK me as BRAINLIEST and help me achieve Ace RANK.

Discussion

44.	Find the least number which must be subtracted from 8157 to obtain a perfect square.Find the perfect square number and its square root
Answer» Answer: 57 Step-by-step explanation: 8157-57=8100 8100 is the SQUARE of 90 So, 90 is the square ROOT of 8100

44.

Find the least number which must be subtracted from 8157 to obtain a perfect square.Find the perfect square number and its square root

Answer»

Answer:

57

Step-by-step explanation:

8157-57=8100

8100 is the SQUARE of 90

So, 90 is the square ROOT of 8100

Discussion

45.	8.95 square - 1.05 square find the value using algebric expression
Answer» ANSWER: okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

45.

8.95 square - 1.05 square find the value using algebric expression

Answer»

ANSWER:

okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

Discussion

46.	4. Give Two examples of adjacent angles in daily life.
Answer» Answer: Give a FOUR examples of adjacent angles in daily life Hour, minute and second HAND of the clock. Open scissor. Ladder LEANING against the wall. Cross roads. Steering wheels of the car. Pens in the pen stand. Open BOOK with one-page open.

46.

4. Give Two examples of adjacent angles in daily life.

Answer»

Answer:

Give a FOUR examples of adjacent angles in daily life

Hour, minute and second HAND of the clock.

Open scissor.

Ladder LEANING against the wall.

Cross roads.

Steering wheels of the car.

Pens in the pen stand.

Open BOOK with one-page open.

Discussion

47.	What is the LCM of -7 and 7
Answer» ANSWER: 7 *PLEASE MARK my answer as BRAINLIEST YARR please*

47.

What is the LCM of -7 and 7

Answer»

ANSWER:

7

PLEASE MARK my answer as BRAINLIEST YARR please

Discussion

48.	0.5(4r-2) + 0.6(5r+10) = 5r and verify the result.
Answer» ANSWER: PLEASE MARK me as a BRANILIEST.

48.

0.5(4r-2) + 0.6(5r+10) = 5r and verify the result.

Answer»

ANSWER:

PLEASE MARK me as a BRANILIEST.

Discussion

49.	Write the abscissa and ordinates of the point (-5, 3)
Answer» ANSWER: the ABSCISSA is -5 and the ORDINATE is 3

49.

Write the abscissa and ordinates of the point (-5, 3)

Answer»

ANSWER:

the ABSCISSA is -5

and the ORDINATE is 3

Discussion

50.	find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the Cofficeint:2x'2-x-6
Answer» GIVEN :- Quadratic polynomial 2x² - x - 6 To find :- Zeros of Quadratic polynomial and Relationship for zeros Solution:- We shall find zeros of the polynomial by the FACTORISATION method 2x² - x - 6 Here the product of NUMBERS should be -12x² and Sum of numbers should be - 1x 3X × -4x = -12x²and 3x- 4x = - 1x So , split the middle term as 3x - 4x 2x² - x - 6 2x² + 3x - 4x - 6 2x² - 4x + 3x - 6 2x(x-2) +3(x-2) (x-2) (2x + 3) x - 2 = 0 x = 2 2x + 3 = 0 2x = -3 x = -3/2 So, the zeros of Quadratic polynomial is 2 and -3/2 Relationship between the zeros $sum \: of \: roots \: = \: \dfrac{ - b}{a}$ $product \: of \: roots \: = \dfrac{c}{a}$ 2x² -x - 6 Comparing with ax² + BX + c a = 2 b = -1 c = -6 $sum \: of \: zeros \: = \: \dfrac{ - ( - 1)}{2}$ $sum \: of \: zeros \: = \dfrac{1}{2}$ $product \: of \: zeros \: = \dfrac{ - 6}{2}$ $product \: of\:zeros \: = \: - 3$

50.

find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the Cofficeint:2x'2-x-6

Answer»

GIVEN :-

Quadratic polynomial 2x² - x - 6

To find :-

Zeros of Quadratic polynomial and Relationship for zeros

Solution:-

We shall find zeros of the polynomial by the FACTORISATION method

2x² - x - 6

Here the product of NUMBERS should be -12x² and Sum of numbers should be - 1x

3X × -4x = -12x²and 3x- 4x = - 1x

So , split the middle term as 3x - 4x

2x² - x - 6

2x² + 3x - 4x - 6

2x² - 4x + 3x - 6

2x(x-2) +3(x-2)

(x-2) (2x + 3)

x - 2 = 0

x = 2

2x + 3 = 0

2x = -3

x = -3/2

So, the zeros of Quadratic polynomial is 2 and -3/2

Relationship between the zeros

$sum \: of \: roots \: = \: \dfrac{ - b}{a}$

$product \: of \: roots \: = \dfrac{c}{a}$

2x² -x - 6

Comparing with ax² + BX + c

a = 2
b = -1
c = -6

$sum \: of \: zeros \: = \: \dfrac{ - ( - 1)}{2}$

$sum \: of \: zeros \: = \dfrac{1}{2}$

$product \: of \: zeros \: = \dfrac{ - 6}{2}$

$product \: of\:zeros \: = \: - 3$

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