332354 + Interview Questions in Secondary School in Math

1.	The product of tow numder is 135 their hcf is 3 find the lcm
Answer» ANSWER: The answer for this QUESTION is 45

1.

The product of tow numder is 135 their hcf is 3 find the lcm

Answer»

ANSWER:

The answer for this QUESTION is 45

Discussion

2.	If the radius of a sphere is triple, what is the ratio of the volume of the new sphere to that of original balloon.
Answer» ANSWER = VOLUME of sphere is:4/3×pi×r cube . if r- radius is trebled it become( 3r) cube =27×r cube=27 time the original volume . if radius is a triple then value is increase by 27 time. if radius of sphere is 12 cm 27, sphere of radius melted and recast to form a NEW solid sphere.

2.

If the radius of a sphere is triple, what is the ratio of the volume of the new sphere to that of original balloon.

Answer»

ANSWER = VOLUME of sphere is:4/3×pi×r cube .

if r- radius is trebled it become( 3r) cube =27×r cube=27 time the original volume . if radius is a triple then value is increase by 27 time.

if radius of sphere is 12 cm 27, sphere of radius melted and recast to form a NEW solid sphere.

Discussion

3.	If √5 & -5 are two zeroespolynomial à 3 + 3x² - 5x-15 .Find third zero
Answer» ANSWER: 4 - √5 Step-by-step explanation: See , sum of ZEREOS = -b/a √5 + (-5) + X = -1 x = -1 -√5 + 5 x = 4 - √5

3.

If √5 & -5 are two zeroespolynomial à 3 + 3x² - 5x-15 .Find third zero

Answer»

ANSWER:

4 - √5

Step-by-step explanation:

See , sum of ZEREOS = -b/a

√5 + (-5) + X = -1

x = -1 -√5 + 5

x = 4 - √5

Discussion

4.	3.5628010010001 is an irrational number between 3.5624 and 3.56342.True or False.
Answer» Step-by-step EXPLANATION: TRUE, it is a IRRATIONAL NUMBER

4.

3.5628010010001 is an irrational number between 3.5624 and 3.56342.True or False.

Answer»

Step-by-step EXPLANATION:

TRUE, it is a IRRATIONAL NUMBER

Discussion

5.	find the least square regression line for the following set of data {(-1, 0), (0, 2), (1, 4), (2, 5) }
Answer» Answer: i would CHOOSE the answer to be 67 and 45 and the LETTER e Step-by-step EXPLANATION:

5.

find the least square regression line for the following set of data {(-1, 0), (0, 2), (1, 4), (2, 5) }

Answer»

Answer:

i would CHOOSE the answer to be 67 and 45 and the LETTER e

Step-by-step EXPLANATION:

Discussion

6.	(5) Find the common difference from thefollowing A.P. 3,3,3,...
Answer» ANSWER: CD = a2-a1 cd=3-3 CD = 0 Step-by-step explanation: please make me a BRAINLIST

6.

(5) Find the common difference from thefollowing A.P. 3,3,3,...

Answer»

ANSWER:

CD = a2-a1

cd=3-3

CD = 0

Step-by-step explanation:

please make me a BRAINLIST

Discussion

7.	On adding 2 under root 3and 3 under root 2 we get??
Answer» Answer: 5√6 Step-by-step EXPLANATION:

7.

On adding 2 under root 3and 3 under root 2 we get??

Answer»

Answer:

5√6

Step-by-step EXPLANATION:

Discussion

8.	A sum of money amounts to ₹1600 in 3 years and ₹1680 after 4 years at a compound interest. what is the rate of compound interest.what is the rate of compound interest per annum
Answer» Answer: answer is 5% Step-by-step explanation: 1680 - 1600 = 80 so the increment is 80 rupees compound interest checks with the before YEAR and gets interest from PRINCIPAL AMOUNT + earlier interest now we have 1600 as principal + earlier interest so 80 is 5% of 1600

8.

A sum of money amounts to ₹1600 in 3 years and ₹1680 after 4 years at a compound interest. what is the rate of compound interest.what is the rate of compound interest per annum

Answer»

Answer:

answer is 5%

Step-by-step explanation:

1680 - 1600 = 80

so the increment is 80 rupees

compound interest checks with the before YEAR and gets interest from PRINCIPAL AMOUNT + earlier interest

now we have 1600 as principal + earlier interest

so 80 is 5% of 1600

Discussion

9.	Find the co-efficient of X in the given equation.13x + 12y +10 = 0
Answer» ANSWER: the co efficient of X is 13 I hope it is USEFUL to you

9.

Find the co-efficient of X in the given equation.13x + 12y +10 = 0

Answer»

ANSWER:

the co efficient of X is 13 I hope it is USEFUL to you

Discussion

10.	What is the product of 130 and 20?
Answer» ANSWER: $130 \times 20 = 2600$ Step-by-step EXPLANATION: Kindly RATE and *like* follow Mark as Brainliest ⚽⚽⚽

10.

What is the product of 130 and 20?

Answer»

ANSWER:

$130 \times 20 = 2600$

Step-by-step EXPLANATION:

Kindly RATE and like
follow

Mark as Brainliest

⚽⚽⚽

Discussion

11.	Find the missing number 2,8,30,128,?
Answer» ANSWER: 362 is the answer .........

11.

Find the missing number 2,8,30,128,?

Answer»

ANSWER:

362 is the answer .........

Discussion

12.	(x-1) (x-3) (x-5) (x-7) - 65 factorise
Answer» ANSWER: $( {x}^{2} - 3x - x + 3)( {x}^{2} - 7x - 3x + 21) \\ ( {x}^{2} - 4x + 3)( {x}^{2} - 10x + 2) \\ {x}^{4} - {10x}^{3} + 2 {x}^{2} - {4x}^{3} + {40x}^{2} - 8x + {3x}^{2} - 30x + 6 \\ {x}^{4} - {14x}^{3} + {45x}^{2} - 38x + 6$

12.

(x-1) (x-3) (x-5) (x-7) - 65 factorise

Answer»

ANSWER:

$( {x}^{2} - 3x - x + 3)( {x}^{2} - 7x - 3x + 21) \\ ( {x}^{2} - 4x + 3)( {x}^{2} - 10x + 2) \\ {x}^{4} - {10x}^{3} + 2 {x}^{2} - {4x}^{3} + {40x}^{2} - 8x + {3x}^{2} - 30x + 6 \\ {x}^{4} - {14x}^{3} + {45x}^{2} - 38x + 6$

Discussion

13.	Plz answrr me..plzz..........
Answer» Answer: 333 Step-by-step explanation: In the FIRST LINE,the clocks show 9,9,3 In the second line each of the CALCULATORS show 10 In the third line each LIGHT bulb is 12 Thus in the last line, 9+(4+2+2+1)×(12×3) 9+9×36 9+324 333

13.

Plz answrr me..plzz..........

Answer»

Answer:

333

Step-by-step explanation:

In the FIRST LINE,the clocks show 9,9,3

In the second line each of the CALCULATORS show 10

In the third line each LIGHT bulb is 12

Thus in the last line,

9+(4+2+2+1)×(12×3)

9+9×36

9+324

333

Discussion

14.	ਕੁਲ ਅੰਕ ੨੦ (11.04.20)1. ਘਾਤ 1 ਦੇ ਬਹੁਪਦ ਨੂੰ ___ਕਹਿੰਦੇ ਹਨ।
Answer» ANSWER: SORRY but I don't ABLE to UNDERSTAND this LANGUAGE

14.

ਕੁਲ ਅੰਕ ੨੦ (11.04.20)1. ਘਾਤ 1 ਦੇ ਬਹੁਪਦ ਨੂੰ ___ਕਹਿੰਦੇ ਹਨ।

Answer»

ANSWER:

SORRY but I don't ABLE to UNDERSTAND this LANGUAGE

Discussion

15.	Find three different irrational number between 3/5 and 9/11
Answer» Answer: 6/5,7/5,8/5 Step-by-step EXPLANATION: because they are not divivded.

15.

Find three different irrational number between 3/5 and 9/11

Answer»

Answer:

6/5,7/5,8/5

Step-by-step EXPLANATION:

because they are not divivded.

Discussion

16.	Find rational number between 3 and 4
Answer» Answer: 21/7 and 28/7 22/7 and 29/7

16.

Find rational number between 3 and 4

Answer»

Answer:

21/7 and 28/7

22/7 and 29/7

Discussion

17.	Perimeter of a Rectangle is 28cm.The diagonal length of this rectangle is 10cm.Then find the length and breadth of this rectangle.
Answer» Answer: ok ok IWILL TRY latar ....bye SSE unansjajsh7s

17.

Perimeter of a Rectangle is 28cm.The diagonal length of this rectangle is 10cm.Then find the length and breadth of this rectangle.

Answer»

Answer:

ok ok IWILL TRY latar ....bye SSE unansjajsh7s

Discussion

18.	4X minutes past 10 0'clock and 2x minutes to 11 o'clock are the same , then what is that time ?
Answer» Answer: 10:40 Step-by-step EXPLANATION: Given 4x=60-2x (as 60 MINUTES are in 1 HOUR) 6x=60 x=10 minutes 4x=40 Time = 10:40

18.

4X minutes past 10 0'clock and 2x minutes to 11 o'clock are the same , then what is that time ?

Answer»

Answer:

10:40

Step-by-step EXPLANATION:

Given

4x=60-2x (as 60 MINUTES are in 1 HOUR)

6x=60

x=10 minutes

4x=40

Time = 10:40

Discussion

19.	Which are the roots of the quadratic function f(b) = b ^ 2 - 75 Select two options .
Answer» Quadratic function: LET $x$ be a VARIABLE, then a quadratic function is of the form $\quad\quad f(x)=ax^{2}+bx+c$ where $a,\:b,\:c\in\mathbb{R}$ with $a\neq 0$ Solution: The GIVEN quadratic function is $\quad\quad f(b)=b^{2}-75$ To find the roots of this function, we EQUATE $f(b)$ with zero $(0)$ $\Rightarrow f(b)=0$ $\Rightarrow b^{2}-75=0$ $\Rightarrow b^{2}=75$ $\Rightarrow b^{2}=3\times 25$ $\Rightarrow b^{2}=(\sqrt{3})^{2}\times 5^{2}$ $\Rightarrow b^{2}=(5\sqrt{3})^{2}$ $\Rightarrow b=\pm 5\sqrt{3}$ Answer: Therefore the roots of the given quadratic function are $\quad\quad\quad b=\pm 5\sqrt{3}$ .

19.

Which are the roots of the quadratic function f(b) = b ^ 2 - 75 Select two options .

Answer»

Quadratic function: LET $x$ be a VARIABLE, then a quadratic function is of the form

$\quad\quad f(x)=ax^{2}+bx+c$

where $a,\:b,\:c\in\mathbb{R}$ with $a\neq 0$

Solution:

The GIVEN quadratic function is

$\quad\quad f(b)=b^{2}-75$

To find the roots of this function, we EQUATE $f(b)$ with zero $(0)$

$\Rightarrow f(b)=0$

$\Rightarrow b^{2}-75=0$

$\Rightarrow b^{2}=75$

$\Rightarrow b^{2}=3\times 25$

$\Rightarrow b^{2}=(\sqrt{3})^{2}\times 5^{2}$

$\Rightarrow b^{2}=(5\sqrt{3})^{2}$

$\Rightarrow b=\pm 5\sqrt{3}$

Answer: Therefore the roots of the given quadratic function are

$\quad\quad\quad b=\pm 5\sqrt{3}$ .

Discussion

20.	Sue bought a triangular shaped piece of wood with a height is 6 inches and a base of 2 inches. She plans to cover the front with a piece of fabric, how much fabric will she need?
Answer» Given: A TRIANGULAR piece of wood 6 inches by 2 inches To Find: The AMOUNT of fabric NEEDED to cover the front of the wood Explanation The amount of fabric needed is the area of the triangle. Solution: Find the area of the triangle: Area of the triangle = 1/2 x base x height Area of the triangle = 1/2 x 2 x 6 Area of the triangle = 6 in² Answer: She needs 6 in² of the fabric

20.

Sue bought a triangular shaped piece of wood with a height is 6 inches and a base of 2 inches. She plans to cover the front with a piece of fabric, how much fabric will she need?

Answer»

Given:

A TRIANGULAR piece of wood 6 inches by 2 inches

To Find:

The AMOUNT of fabric NEEDED to cover the front of the wood

Explanation

The amount of fabric needed is the area of the triangle.

Solution:

Find the area of the triangle:

Area of the triangle = 1/2 x base x height

Area of the triangle = 1/2 x 2 x 6

Area of the triangle = 6 in²

Answer: She needs 6 in² of the fabric

Discussion

21.	A bus travels 350 km In 4 hours with a constant speed how far can it travel in 7 hours with the same speed
Answer» Answer: 625.50 KM or 625 km and 500m Step-by-step EXPLANATION:

21.

A bus travels 350 km In 4 hours with a constant speed how far can it travel in 7 hours with the same speed

Answer»

Answer:

625.50 KM or 625 km and 500m

Step-by-step EXPLANATION:

Discussion

22.	Solve for xand y using substitution method 2x,- 3y+15=0&3x-5=0
Answer» Step-by-step EXPLANATION: GIVEN 2x-3y+15=0 and 3x-5 =0 from 3x-5 =0 we get x=5/3 put x=5/3 in 2x-3y+15=0 2(5/3)-3y+15=0 (10/3)-3y+15=0 (10+45)/3=3y y=55/9 so x=5/3, y=55/9 i HOPE you understood :)

22.

Solve for xand y using substitution method 2x,- 3y+15=0&3x-5=0

Answer»

Step-by-step EXPLANATION:

GIVEN 2x-3y+15=0 and 3x-5 =0

from 3x-5 =0 we get x=5/3

put x=5/3 in 2x-3y+15=0

2(5/3)-3y+15=0

(10/3)-3y+15=0

(10+45)/3=3y

y=55/9

so x=5/3, y=55/9

i HOPE you understood :)

Discussion

23.	Find one rational and one irrational no.between 1.12 and1.13
Answer» Answer: 1121/1000,1123/1000,1124/1000

23.

Find one rational and one irrational no.between 1.12 and1.13

Answer»

Answer:

1121/1000,1123/1000,1124/1000

Discussion

24.	If a and b are zeroes of the polynomial x2 - 6x + a.Find the value of a if 3a+ 2b= 20
Answer» ANSWER: a=4 b=6 Step-by-step explanation:4645=ab

24.

If a and b are zeroes of the polynomial x2 - 6x + a.Find the value of a if 3a+ 2b= 20

Answer»

ANSWER:

a=4 b=6

Step-by-step explanation:4645=ab

Discussion

25.	Time t in minutes of x hours and y minutes formula
Answer» Step-by-step explanation: HEY mate t= x HR +y min => x60+y(min) =>t = x60+ y. (min) *The* *formula* is :t = x60 + y. minutes* *hope* it *helps* ✌

25.

Time t in minutes of x hours and y minutes formula

Answer»

Step-by-step explanation:

HEY mate

t= x HR +y min

=> x*60+y(min)

=>t = x*60+ y. (min)

The formula is :t = x60 + y. minutes*

hope it helps ✌

Discussion

26.	16 / 125 are terminatinal or non terminatinal
Answer» Step-by-step explanation: 16\125 is TERMINATING

26.

16 / 125 are terminatinal or non terminatinal

Answer»

Step-by-step explanation:

16\125

is TERMINATING

Discussion

27.	Find the place value of two fours in 4240
Answer» Answer: 4000 and 40 I HOPE it is USEFUL to you FOLLOW me

27.

Find the place value of two fours in 4240

Answer»

Answer:

4000 and 40

I HOPE it is USEFUL to you

FOLLOW me

Discussion

28.	Shrewd milkman mixes water and milk in the ratio of 2:3. what part of this mixture should be removed and replaced with water so that the solution contains water and milk in the ratio 1:1?
Answer» Answer: 1/6 Step-by-step explanation: Assume 5l mix => 2L WATER + 3l milk x l mixter is removed. 2x/5 water + 3X/5 milk remaining (2 - 2x/5) water + (3 - 3x/5) milk x l water is added (2 - 2x/5 + x) water + (3 - 3x/5) milk new ratio = 1:1 (2 - 2x/5 + x) = (3 - 3x/5) => 10 - 2x + 5x = 15 - 3x => 6X = 5 => x = 5/6 l in 5l ---> 5/6 l is removed => 1l ---> 1/6 l is removed

28.

Shrewd milkman mixes water and milk in the ratio of 2:3. what part of this mixture should be removed and replaced with water so that the solution contains water and milk in the ratio 1:1?

Answer»

Answer:

1/6

Step-by-step explanation:

Assume 5l mix

=> 2L WATER + 3l milk

x l mixter is removed.

2x/5 water + 3X/5 milk

remaining

(2 - 2x/5) water + (3 - 3x/5) milk

x l water is added

(2 - 2x/5 + x) water + (3 - 3x/5) milk

new ratio = 1:1

(2 - 2x/5 + x) = (3 - 3x/5)

=> 10 - 2x + 5x = 15 - 3x

=> 6X = 5

=> x = 5/6 l

in 5l ---> 5/6 l is removed

=> 1l ---> 1/6 l is removed

Discussion

29.	The sum of two numbers is 16 and the sum of their reciprocals is 1/3Find the numbers.
Answer» $\huge{ \bf{ \green{ \mid{ \underline{ \overline{ \orange{work \: out...}}}}}}}$ $\huge{ \sf{ \blue{ \mid{ \underline{ \overline{ \red{in \: the \: attachment..}}}}}}}$ $\large{ \bold{ answers = 12 \: and \: 4}}$ $\large{ \bold{ \green{running \:in \: an \: endless \: maze...}}}$ ✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔

29.

The sum of two numbers is 16 and the sum of their reciprocals is 1/3Find the numbers.

Answer»

$\huge{ \bf{ \green{ \mid{ \underline{ \overline{ \orange{work \: out...}}}}}}}$

$\huge{ \sf{ \blue{ \mid{ \underline{ \overline{ \red{in \: the \: attachment..}}}}}}}$

$\large{ \bold{ answers = 12 \: and \: 4}}$

$\large{ \bold{ \green{running \:in \: an \: endless \: maze...}}}$

✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔

Discussion

30.	Getting a composite number
Answer» Step-by-step EXPLANATION: To determine if a NUMBER is prime or composite, follow these steps: FIND all factors of the number. If the number has only TWO factors, 1 and itself, then it is prime. If the number has more than two factors, then it is composite.

30.

Getting a composite number

Answer»

Step-by-step EXPLANATION:

To determine if a NUMBER is prime or composite, follow these steps:

FIND all factors of the number.

If the number has only TWO factors, 1 and itself, then it is prime.

If the number has more than two factors, then it is composite.

Discussion

31.	Find the value of bracket 3 the power 0 + 4 the power minus 1 (close x to the power 2
Answer» ANSWER: HLW mate Step-by-step explanation: 3 POWER O= 1 4 Power - 1 = 1/4 2 Power 2 = 4 :. answer is 1 + ( 1/4) * 4 = 2 mark me as brainlist..plz

31.

Find the value of bracket 3 the power 0 + 4 the power minus 1 (close x to the power 2

Answer»

ANSWER:

HLW mate

Step-by-step explanation:

3 POWER O= 1

4 Power - 1 = 1/4

2 Power 2 = 4

:. answer is 1 + ( 1/4) * 4 = 2

mark me as brainlist..plz

Discussion

32.	All natural numbers are also rational numbers
Answer» ANSWER: yes because all natural NUMBERS can be WRITTEN in the format of p/q FORM

32.

All natural numbers are also rational numbers

Answer»

ANSWER:

yes because all natural NUMBERS can be WRITTEN in the format of p/q FORM

Discussion

33.	- TheEisproduct of towo135 Their Hofnumbers.is 3 Find the comSite
Answer» ANSWER: the PRODUCT of 2×135 Step-by-step EXPLANATION: please MARK brainleist

33.

- TheEisproduct of towo135 Their Hofnumbers.is 3 Find the comSite

Answer»

ANSWER:

the PRODUCT of 2×135

Step-by-step EXPLANATION:

please MARK brainleist

Discussion

34.	• Cos 1 x Cos 2 x Cos3x.... .X Cos90
Answer» ANSWER: CosXcos2xCos3x............cos90 cosXcos2Xcos3X...........×0° =0 Answer.

34.

• Cos 1 x Cos 2 x Cos3x.... .X Cos90

Answer»

ANSWER:

CosXcos2xCos3x............cos90

cosXcos2Xcos3X...........×0°

=0 Answer.

Discussion

35.	If X = 3 - 2 √2 find X ^2 + 1/ x^2
Answer» I HOPE this Picture *hel*ps you and PLEASE MARK me the BRAINLIAST.

35.

If X = 3 - 2 √2 find X ^2 + 1/ x^2

Answer»

I HOPE this Picture helps you and PLEASE MARK me the BRAINLIAST.

Discussion

36.	Two congruent polygons are
Answer» Answer: TWO POLYGONS are congruent if they are the same SIZE and shape - that is, if their corresponding angles and SIDES are equal.

36.

Two congruent polygons are

Answer»

Answer:

TWO POLYGONS are congruent if they are the same SIZE and shape - that is, if their corresponding angles and SIDES are equal.

Discussion

37.	Find sum of first 20 terms of an AP whose first term is 24 and common difference is minus 2
Answer» Answer: Solution : Given: Number of terms(N)=20 first term(a) = 24 common DIFFERENCE(d) =-2 we know that, Sum of a A. P. =n/2(2A+(n-1)d) =20/2(224+(20-1)(-2)) =10(48+19(-2)) =10(48-38) =10*10 =100 Hence, The sum is 100

37.

Find sum of first 20 terms of an AP whose first term is 24 and common difference is minus 2

Answer»

Answer:

Solution :

Given:

Number of terms(N)=20

first term(a) = 24

common DIFFERENCE(d) =-2

we know that,

Sum of a A. P. =n/2(2A+(n-1)d)

=20/2(2*24+(20-1)(-2))

=10(48+19*(-2))

=10(48-38)

=10*10

=100

Hence,

The sum is 100

Discussion

38.	Find 5 rational numbers between 1 and 2 with explanation.
Answer» ANSWER: THERE ARE INFINITELY MANY RATIONAL NUMBERS BETWEEN 1 AND 2. EXACTLY HALF IS 3/2

38.

Find 5 rational numbers between 1 and 2 with explanation.

Answer»

ANSWER:

THERE ARE INFINITELY MANY RATIONAL NUMBERS BETWEEN 1 AND 2. EXACTLY HALF IS 3/2

Discussion

39.	Classify the rational and irrational (5+√14)-√14
Answer» ANSWER: Rational Step-by-step EXPLANATION: $\sqrt{14 \: }$ INSIDE the bracket will be cancelled by $- \sqrt{14}$ OUTSIDE the bracket *Hope* *this* *helps*

39.

Classify the rational and irrational (5+√14)-√14

Answer»

ANSWER:

Rational

Step-by-step EXPLANATION:

$\sqrt{14 \: }$

INSIDE the bracket will be cancelled by

$- \sqrt{14}$

OUTSIDE the bracket

Hope this helps

Discussion

40.	2Circular wire of radius 84 cmconverted into square shapewhat ill be perimeter of square
Answer» Step-by-step EXPLANATION: ...........MARK me as BRAINLIEST

40.

2Circular wire of radius 84 cmconverted into square shapewhat ill be perimeter of square

Answer»

Step-by-step EXPLANATION:

...........MARK me as BRAINLIEST

Discussion

41.	(10.) Mother gives equal share of a chocolate to her 2 children(a.) (b.) (c.) (d.) None of these(11.) Rahul gave one 100-rupee note and one 50-rupee note(a.) Rs. 100 (b.) Rs. 15 (c.) Rs. 150 (d.) Rs. 50
Answer» Answer: 11 (C)Rs.150 Step-by-step explanation: 100+59 =150 RUPEES

41.

(10.) Mother gives equal share of a chocolate to her 2 children(a.) (b.) (c.) (d.) None of these(11.) Rahul gave one 100-rupee note and one 50-rupee note(a.) Rs. 100 (b.) Rs. 15 (c.) Rs. 150 (d.) Rs. 50

Answer»

Answer:

11 (C)Rs.150

Step-by-step explanation:

100+59 =150 RUPEES

Discussion

42.	A number when divided by 259 leaves a remainder 139. What will be the remainder when thesame number is divided by 37?(A) 28 (B) 29(C) 30 (D) 31
Answer» Answer: 28. Step-by-step explanation: Given: A NUMBER when divided by 259 leaves a remainder 139. To FIND : what will be the remainder when the same number is divided by 37? Solution: Let the divisor be N . Let the QUOTIENT be q Dividend = (Divisor \times Quotient)+RemainderDividend=(Divisor×Quotient)+Remainder Dividend = (259q)+139Dividend=(259q)+139 Dividend = 37(7q)+111+28Dividend=37(7q)+111+28 Dividend = 37(7q)+3(37)+28Dividend=37(7q)+3(37)+28 Dividend = 37(7q+3)+28Dividend=37(7q+3)+28 Thus the remainder is 28 .

42.

A number when divided by 259 leaves a remainder 139. What will be the remainder when thesame number is divided by 37?(A) 28 (B) 29(C) 30 (D) 31

Answer»

Answer:

28.

Step-by-step explanation:

Given: A NUMBER when divided by 259 leaves a remainder 139.

To FIND : what will be the remainder when the same number is divided by 37?

Solution:

Let the divisor be N .

Let the QUOTIENT be q

Dividend = (Divisor \times Quotient)+RemainderDividend=(Divisor×Quotient)+Remainder

Dividend = (259q)+139Dividend=(259q)+139

Dividend = 37(7q)+111+28Dividend=37(7q)+111+28

Dividend = 37(7q)+3(37)+28Dividend=37(7q)+3(37)+28

Dividend = 37(7q+3)+28Dividend=37(7q+3)+28

Thus the remainder is 28 .

Discussion

43.	1/4 and -1 form a quafratic polynomial whose zero are given
Answer» Answer: hey.. your answer is: A POLYNOMIAL can be WRITTEN as: x²-( Sum of zeroes) x + Product of zeroes. GIVEN, Sum of zeroes = 1/4 Product of zeroes = (-1) Hence, the required polynomial is: x²- 1/4x -1 =0 hope this HELPS you. please mark me as the Brainliest follow me

43.

1/4 and -1 form a quafratic polynomial whose zero are given

Answer»

Answer:

hey.. your answer is:

A POLYNOMIAL can be WRITTEN as:

x²-( Sum of zeroes) x + Product of zeroes.

GIVEN,

Sum of zeroes = 1/4

Product of zeroes = (-1)

Hence, the required polynomial is:

x²- 1/4x -1 =0

hope this HELPS you.

please mark me as the Brainliest

follow me

Discussion

44.	DO NOT SPAM PLSwrite with statement
Answer» ANSWER: Here is your answer RAHMAN JI

44.

DO NOT SPAM PLSwrite with statement

Answer»

ANSWER:

Here is your answer RAHMAN JI

Discussion

45.	Do it on paper and explain itIf x=3+2√2 find the value of (x-1/x)^3
Answer» Answer: 128√2 Step-by-step EXPLANATION: ${\underline{{\text{Given}}}}$ $x = 3 + 2 \sqrt{2}$ ${\underline{{\text{To <klux>FIND</klux>:}}}}$ $(x - \dfrac{1}{x} ) {}^{3}$ ${\underline{{\text{Solution:}}}}$ FIRST We should find the VALUE of $\frac{1}{x}$ $x = 3 + 2 \sqrt{2} \\ \\ \text{\text{\text{Or,}}} \: \: \frac{1}{x} = \frac{1}{3 + 2 \sqrt{2} } \\ \\ \text{ [Rationalizing the denominator }]\\ \\ = \frac{(3 - 2\sqrt{2}) }{(3 + 2 \sqrt{2})(3 - 2 \sqrt{2}) } \\ \\ = \frac{3 - 2 \sqrt{2} }{ {(3)}^{2} - {(2 \sqrt{2}) }^{2} } \: \: \text{[using (a+b)(a-b) = } {a}^{2} - {b}^{2} ]\\ \\ = \frac{3 - 2 \sqrt{2} }{9 - 8} \\ \\ = \frac{3 - 2 \sqrt{2} }{1} \\ \\ \therefore \: \frac{1}{x} = 3 - 2 \sqrt{2}$ Now, $(x - \frac{1}{x} ) {}^{3} \\ \\ \{ (3 + 2 \sqrt{2} ) - (3 - 2 \sqrt{2} )\} {}^{3} \\ \\ (3 + 2 \sqrt{2} - 3 + 2 \sqrt{2} ) {}^{3} \\ \\ {(4 \sqrt{2} )}^{3} \\ \\ 64 \times 2 \sqrt{2} \\ \\ 128 \sqrt{2} \\ \\ \therefore\text{ The required answer is 128$ \sqrt{2}$ }$ ${\underline{{\text{ Some Important Formula Of Algebra }}}}$ ${(x + y)}^{2}={x}^{2}+{y}^{2}+2xy\\ \\{(x - y)}^{2}={x}^{2}+{y}^{2}-2xy\\ \\{(x+y)}^{2}= (x - y) {}^{2}+4xy\\ \\{(x-y)}^{2}=(x+y){}^{2}-4xy\\ \\ (x + y)^{2}+(x-y)^{2}=2( {x}^{2}+{y}^{2} )\\ \\(x+y)^{2}- (x-y) {}^{2}=4xy\\ \\ {(x + y)}^{3}={x}^{3}+{y}^{3}+ 3xy(x + y) \\ \\(x - y)^{3}={x}^{3}-{y}^{3}- 3xy(x - y)$

45.

Do it on paper and explain itIf x=3+2√2 find the value of (x-1/x)^3

Answer»

Answer:

128√2

Step-by-step EXPLANATION:

${\underline{{\text{Given}}}}$

$x = 3 + 2 \sqrt{2}$

${\underline{{\text{To <klux>FIND</klux>:}}}}$

$(x - \dfrac{1}{x} ) {}^{3}$

${\underline{{\text{Solution:}}}}$

FIRST We should find the VALUE of $\frac{1}{x}$

$x = 3 + 2 \sqrt{2} \\ \\ \text{\text{\text{Or,}}} \: \: \frac{1}{x} = \frac{1}{3 + 2 \sqrt{2} } \\ \\ \text{ [Rationalizing the denominator }]\\ \\ = \frac{(3 - 2\sqrt{2}) }{(3 + 2 \sqrt{2})(3 - 2 \sqrt{2}) } \\ \\ = \frac{3 - 2 \sqrt{2} }{ {(3)}^{2} - {(2 \sqrt{2}) }^{2} } \: \: \text{[using (a+b)(a-b) = } {a}^{2} - {b}^{2} ]\\ \\ = \frac{3 - 2 \sqrt{2} }{9 - 8} \\ \\ = \frac{3 - 2 \sqrt{2} }{1} \\ \\ \therefore \: \frac{1}{x} = 3 - 2 \sqrt{2}$

Now,

$(x - \frac{1}{x} ) {}^{3} \\ \\ \{ (3 + 2 \sqrt{2} ) - (3 - 2 \sqrt{2} )\} {}^{3} \\ \\ (3 + 2 \sqrt{2} - 3 + 2 \sqrt{2} ) {}^{3} \\ \\ {(4 \sqrt{2} )}^{3} \\ \\ 64 \times 2 \sqrt{2} \\ \\ 128 \sqrt{2} \\ \\ \therefore\text{ The required answer is 128$ \sqrt{2}$ }$

${\underline{{\text{ Some Important Formula Of Algebra }}}}$

${(x + y)}^{2}={x}^{2}+{y}^{2}+2xy\\ \\{(x - y)}^{2}={x}^{2}+{y}^{2}-2xy\\ \\{(x+y)}^{2}= (x - y) {}^{2}+4xy\\ \\{(x-y)}^{2}=(x+y){}^{2}-4xy\\ \\ (x + y)^{2}+(x-y)^{2}=2( {x}^{2}+{y}^{2} )\\ \\(x+y)^{2}- (x-y) {}^{2}=4xy\\ \\ {(x + y)}^{3}={x}^{3}+{y}^{3}+ 3xy(x + y) \\ \\(x - y)^{3}={x}^{3}-{y}^{3}- 3xy(x - y)$

Discussion

46.	Given that A=5 7 3 1 5 23 2 1and A³ -KA²+lA = I; where I is a 3x3 unit matrix, then the value of k+l is
Answer» Given : $A = \left[\begin{array}{ccc}5&7&3\\<klux>1</klux>&5&2\\3&2&1\end{array}\right]$ A³ - KA² + LA = I To Find : K + L Solution: $A = \left[\begin{array}{ccc}5&7&3\\1&5&2\\3&2&1\end{array}\right]$ $A^2 = \left[\begin{array}{ccc}41&76&32\\16&36&15\\20&33&14\end{array}\right]$ $A^3 = \left[\begin{array}{ccc}377&731&307\\161&322&135\\175&333&140\end{array}\right]$ $I = \left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]$ 377 - K41 + L5 = 1 => 41K - 5L = 376 => 287K - 35L = 2632 731 - 76K + L7 = 0 => 76Kk - 7L = 731 => 380K - 35L = 3655 => 93K = 1023 => K= 11 => L= 15 K + L = 11 + 15 = 26 Learn More: MATRICESIf A and B are matrices of order 3 × and × 5 respectively ... brainly.in/question/25340632 brainly.in/question/23969993

46.

Given that A=5 7 3 1 5 23 2 1and A³ -KA²+lA = I; where I is a 3x3 unit matrix, then the value of k+l is

Answer»

Given : $A = \left[\begin{array}{ccc}5&7&3\\<klux>1</klux>&5&2\\3&2&1\end{array}\right]$

A³ - KA² + LA = I

To Find : K + L

Solution:

$A = \left[\begin{array}{ccc}5&7&3\\1&5&2\\3&2&1\end{array}\right]$

$A^2 = \left[\begin{array}{ccc}41&76&32\\16&36&15\\20&33&14\end{array}\right]$

$A^3 = \left[\begin{array}{ccc}377&731&307\\161&322&135\\175&333&140\end{array}\right]$

$I = \left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right]$

377 - K41 + L5 = 1 => 41K - 5L = 376 => 287K - 35L = 2632

731 - 76K + L7 = 0 => 76Kk - 7L = 731 => 380K - 35L = 3655

=> 93K = 1023

=> K= 11

=> L= 15

K + L = 11 + 15 = 26

Learn More:

MATRICESIf A and B are matrices of order 3 × and × 5 respectively ...

brainly.in/question/25340632

brainly.in/question/23969993

Discussion

47.	find the coordinates of the points which divided the line segment joining the point (-1,7)and(4,-3),in the ratio 2:3
Answer» I HOPE it's HELP you PLZ MARK me as a BRAINEST

47.

find the coordinates of the points which divided the line segment joining the point (-1,7)and(4,-3),in the ratio 2:3

Answer»

I HOPE it's HELP you

PLZ MARK me as a BRAINEST

Discussion

48.	In triangle ABC, LC=90tanA= 1/3findSin A CosB + Cos A SinB
Answer» Step-by-step EXPLANATION: Step-by-step explanation: tanA=BC/AB=‌1/root 3 Thus BC=1 AB=root 3 In TRIANGLE ABC, AB2+BC2=AC2 Thus AC=2(BY PYTHAGORAS THEORM) SinAcosC+cosAsinC=1/21/2+root3 /2root3/2 =1/4+3/4 =4/4 =1

48.

In triangle ABC, LC=90tanA= 1/3findSin A CosB + Cos A SinB

Answer»

Step-by-step EXPLANATION:

Step-by-step explanation:

tanA=BC/AB=‌1/root 3

Thus BC=1 AB=root 3

In TRIANGLE ABC,

AB2+BC2=AC2

Thus AC=2(BY PYTHAGORAS THEORM)

SinAcosC+cosAsinC=1/2*1/2+root3 /2*root3/2

=1/4+3/4

=4/4

=1

Discussion

49.	The sum of the digits of a two digit number is 9. Also, nine times this number is twice thenumber obtained by reversing the order of the digits. Find the number.
Answer» ANSWER: Step-by-step EXPLANATION: Hope this will be helpful to you and PLEASE mark my answer as the BRAINLEAST answer.plz plz plz.......

49.

The sum of the digits of a two digit number is 9. Also, nine times this number is twice thenumber obtained by reversing the order of the digits. Find the number.

Answer»

ANSWER:

Step-by-step EXPLANATION:

Hope this will be helpful to you and PLEASE mark my answer as the BRAINLEAST answer.plz plz plz.......

Discussion

50.	0.In an A.P. an = 3n + 2 then find 12th term.
Answer» ANSWER: The 12TH term of the AP = $a12 = 3 \times 12 + 2 \\ a12 = 36 + 2 \\ a12 = 38$ Step-by-step explanation: Kindly rate and *like* Follow Mark as Brainliest ⚽⚽⚽

50.

0.In an A.P. an = 3n + 2 then find 12th term.

Answer»

ANSWER:

The 12TH term of the AP =

$a12 = 3 \times 12 + 2 \\ a12 = 36 + 2 \\ a12 = 38$

Step-by-step explanation:

Kindly rate and like
Follow

Mark as Brainliest

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Discussion

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