332354 + Interview Questions in Secondary School in Math

1.	Prove that 1 by root 2 plus root 3 is an irrational number.
Answer» Step-by-step EXPLANATION: i hope u can UNDERSTAND my SOLUTION

1.

Prove that 1 by root 2 plus root 3 is an irrational number.

Answer»

Step-by-step EXPLANATION:

i hope

u can UNDERSTAND

my SOLUTION

Discussion

2.	shopkeepers give 3 Trophy in one Rupee and on returning the rappers of all three toffees he give one free toffee then in 15 rupees how many toffees were purchase
Answer» ANSWER: The answer is 60 Toffees. I HOPE IT WILL HELP YOU.

2.

shopkeepers give 3 Trophy in one Rupee and on returning the rappers of all three toffees he give one free toffee then in 15 rupees how many toffees were purchase

Answer»

ANSWER:

The answer is 60 Toffees.

I HOPE IT WILL HELP YOU.

Discussion

3.	If the perimeter of a square and rectangle is 100.Find whose area is more by how much?
Answer» $\Large{\underline{\underline{\mathfrak{\bf{<klux>QUESTION</klux>}}}}}$ If the PERIMETER of a square and RECTANGLE is 100.Find whose area is more by how much ? $\Large{\underline{\underline{\mathfrak{\bf{Solution}}}}}$ $\Large{\underline{\mathfrak{\bf{\pink{Given}}}}}$ perimeter of a square = 100 units Perimeter of a rectangle = 100 units perimeter of a square = Perimeter of a rectangle $\Large{\underline{\mathfrak{\bf{\pink{Find}}}}}$ Find whose area is more by how much? $\Large{\underline{\underline{\mathfrak{\bf{Explanation}}}}}$ Let, Length and breadth of a rectangle is x and y . So, ★ Perimeter of rectangle = 2( x + y ) ★ perimeter of square = (side)² A/c to question , ( perimeter of a square = Perimeter of a rectangle ) ➥ 4(side) = 2( x + y ) ➥ Side of square = 2.(x+y)/4 ➥ Side of square = (x+y)/2 units ★ Area of square = (side)² So, ➥ Area of square(S) = (x+y)²/4 units² ....(1) ★ Area of rectangle(R) = x.y units² .......(2) Subtract equ(2) - equ(1) ➥ R - S = (x.y) - (x+y)²/4 ➥ R - S = { 4x.y - (x²+y²+2.xy)}/4 ➥ R - S = { -x² - y² + 2.xy}/4 ➥ R - S = - ( x² + y² - 2.xy)/4 ➥ R - S = -(x - y)²/4 Therefore, R - S = Negative quantity. Thus, S > R Hence, Area of square greater than area of rectangle ( Answer) _________________________

3.

If the perimeter of a square and rectangle is 100.Find whose area is more by how much?

Answer»

$\Large{\underline{\underline{\mathfrak{\bf{<klux>QUESTION</klux>}}}}}$

If the PERIMETER of a square and RECTANGLE is 100.Find whose area is more by how much ?

$\Large{\underline{\underline{\mathfrak{\bf{Solution}}}}}$

$\Large{\underline{\mathfrak{\bf{\pink{Given}}}}}$

perimeter of a square = 100 units
Perimeter of a rectangle = 100 units
perimeter of a square = Perimeter of a rectangle

$\Large{\underline{\mathfrak{\bf{\pink{Find}}}}}$

Find whose area is more by how much?

$\Large{\underline{\underline{\mathfrak{\bf{Explanation}}}}}$

Let,

Length and breadth of a rectangle is x and y .

So,

★ Perimeter of rectangle = 2( x + y )

★ perimeter of square = (side)²

A/c to question ,

( perimeter of a square = Perimeter of a rectangle )

➥ 4(side) = 2( x + y )

➥ Side of square = 2.(x+y)/4

➥ Side of square = (x+y)/2 units

★ Area of square = (side)²

So,

➥ Area of square(S) = (x+y)²/4 units² ....(1)

★ Area of rectangle(R) = x.y units² .......(2)

Subtract equ(2) - equ(1)

➥ R - S = (x.y) - (x+y)²/4

➥ R - S = { 4x.y - (x²+y²+2.xy)}/4

➥ R - S = { -x² - y² + 2.xy}/4

➥ R - S = - ( x² + y² - 2.xy)/4

➥ R - S = -(x - y)²/4

Therefore, R - S = Negative quantity.

Thus,

S > R

Hence,

Area of square greater than area of rectangle ( Answer)

_________________________

Discussion

4.	What would be the annual interest accused on the deposit of ₹ 10000 in a bank that pay 4% per annum rate of interest
Answer» Answer: The ANNUAL Interest will be RS. 400. Step-by-step explanation: Principal = ₹ 10000 Rate = 4% p.a Time = 1 yr Simple Interest = (PRT)/100 = ₹ (1000041)/100 = ₹400 Hope this helps.

4.

What would be the annual interest accused on the deposit of ₹ 10000 in a bank that pay 4% per annum rate of interest

Answer»

Answer:

The ANNUAL Interest will be RS. 400.

Step-by-step explanation:

Principal = ₹ 10000

Rate = 4% p.a

Time = 1 yr

Simple Interest = (P*R*T)/100

= ₹ (10000*4*1)/100

= ₹400

Hope this helps.

Discussion

5.	5 4 96 3 ? 7 2 465 20 45
Answer» Since the MIDDLE no. of the first and second ROWS are lesser than the OTHERS, hence the REQUIRED no (?) =1

5.

5 4 96 3 ? 7 2 465 20 45

Answer»

Since the MIDDLE no. of the first and second ROWS are lesser than the OTHERS, hence the REQUIRED no (?) =1

Discussion

6.	2y+7x=-5,5y-7x=12 solve x & y
Answer» ANSWER: -1,1 Step-by-step explanation: 2y+7x= -5 5y-7x= 12 by adding 7y=7 y=1 then X= -1 hope this will HELP U

6.

2y+7x=-5,5y-7x=12 solve x & y

Answer»

ANSWER:

-1,1

Step-by-step explanation:

2y+7x= -5

5y-7x= 12

by adding

7y=7

y=1

then X= -1

hope this will HELP U

Discussion

7.	The smallest number that must be added to 9829 72 so that it is divisible by 8 is
Answer» Answer: 4 Step-by-step EXPLANATION:

7.

The smallest number that must be added to 9829 72 so that it is divisible by 8 is

Answer»

Answer:

4

Step-by-step EXPLANATION:

Discussion

8.	Simplify = 1 half 1/2 x 5/6 x 8/15 x 3/4
Answer» Step-by-step EXPLANATION: SOMETHING MISSING in your questions please TYPE properly.

8.

Simplify = 1 half 1/2 x 5/6 x 8/15 x 3/4

Answer»

Step-by-step EXPLANATION:

SOMETHING MISSING in your questions

please TYPE properly.

Discussion

9.	a positive integer is in the form of 3 Cube + 1 cube being natural number can you write square in any form of other than 3 M + 1 example 3 mo3 implies to for some integer M district for your answer
Answer» Answer: maan and then we Step-by-step explanation: use this is not working with me on Facebook page or not you to see what you need to know the EXACT same problem TIME for us and a few weeks to the top end and then delete all is well here is and what the problem and the KIDS are a BIT more information and about a year now ago in a different 6666 7i us u us to me that they have any to do do you I will was a in the same as LAST a good good long and hard I hard to see what happens in when when it it was so the first time and I

9.

a positive integer is in the form of 3 Cube + 1 cube being natural number can you write square in any form of other than 3 M + 1 example 3 mo3 implies to for some integer M district for your answer

Answer»

Answer:

maan and then we

Step-by-step explanation:

use this is not working with me on Facebook page or not you to see what you need to know the EXACT same problem TIME for us and a few weeks to the top end and then delete all is well here is and what the problem and the KIDS are a BIT more information and about a year now ago in a different 6666 7i us u us to me that they have any to do do you I will was a in the same as LAST a good good long and hard I hard to see what happens in when when it it was so the first time and I

Discussion

10.	Smallest and greatest 7-digit number using 0,1,2,3,4
Answer» Answer: 43210 is the SMALLEST NUMBER. 10234 is the GREAT number.

10.

Smallest and greatest 7-digit number using 0,1,2,3,4

Answer»

Answer:

43210 is the SMALLEST NUMBER.

10234 is the GREAT number.

Discussion

11.	The Edges Of Rectunglar Board are 6cm 8cm And 10 CM; The Cost Of Painting it At The Rate of 70paise/sqcm Is
Answer» ANSWER: Given that, length (l)=6cm breadth(B)=8cm height (h)=10cm Total surface area of cuboid=2[lb+bh+hl] =2[6×8+8×10+10×6] =2[48+80+60] =2×188 =376cm² The cost of PAINTING PER cm²=70paise =0.7 Rs The cost of painting for 376cm²=376×0.7 =263.2Rs

11.

The Edges Of Rectunglar Board are 6cm 8cm And 10 CM; The Cost Of Painting it At The Rate of 70paise/sqcm Is

Answer»

ANSWER:

Given that,

length (l)=6cm

breadth(B)=8cm

height (h)=10cm

Total surface area of cuboid=2[lb+bh+hl]

=2[6×8+8×10+10×6]

=2[48+80+60]

=2×188

=376cm²

The cost of PAINTING PER cm²=70paise

=0.7 Rs

The cost of painting for 376cm²=376×0.7

=263.2Rs

Discussion

12.	Which expression is equivalent to 5 x + 10 y minus 15
Answer» Answer: x + y - 10 is equivalent to the given EXPRESSION.

12.

Which expression is equivalent to 5 x + 10 y minus 15

Answer»

Answer:

x + y - 10 is equivalent to the given EXPRESSION.

Discussion

13.	Using prime factorization find the hcfand lcm of 12 and18
Answer» Answer: the lowest commom FACTOR is 2(prime no.) the heighest COMMON factor is 3(prime NUMBER) if possible MARK it as the brainliest

13.

Using prime factorization find the hcfand lcm of 12 and18

Answer»

Answer:

the lowest commom FACTOR is 2(prime no.)

the heighest COMMON factor is 3(prime NUMBER)

if possible MARK it as the brainliest

Discussion

14.	(3,18,7) (28,71,35) (48,65,?) (60,108,95)
Answer» ANSWER: what do you WANT .....?????

14.

(3,18,7) (28,71,35) (48,65,?) (60,108,95)

Answer»

ANSWER:

what do you WANT .....?????

Discussion

15.	Salil wants to put a picture in a frame.the picture is38 by 3 cm wide .to fit in a frame the picture cannot be more than 73 by 10 cm wide. How much should the picture be trimmed
Answer» ANSWER: Hey mate, for the answer REFER to the attachment. HOPE IT'S HELPFUL PLZ mark as BRAINLIEST.

15.

Salil wants to put a picture in a frame.the picture is38 by 3 cm wide .to fit in a frame the picture cannot be more than 73 by 10 cm wide. How much should the picture be trimmed

Answer»

ANSWER:

Hey mate,

for the answer REFER to the attachment.

HOPE IT'S HELPFUL

PLZ mark as BRAINLIEST.

Discussion

16.	Akash age is a fraction of 14. Next year his age willbe the multiple of 5. How old will be in next 6 years' s
Answer» Answer: 14 Step-by-step EXPLANATION:

16.

Akash age is a fraction of 14. Next year his age willbe the multiple of 5. How old will be in next 6 years' s

Answer»

Answer:

14

Step-by-step EXPLANATION:

Discussion

17.	Prove that 1/ root 2 -1 = root 2 + 1
Answer» Step-by-step EXPLANATION: $\frac{1}{ \sqrt{2} - 1 } \\ = \frac{(1 + \sqrt{2} )}{ (\sqrt{2 } - 1 )( \sqrt{2} + 1)} \\ = \frac{(1 + \sqrt{2}) }{ { (\sqrt{2}) }^{2} - ( {1}^{2}) } \\ = \frac{ \sqrt{2} + 1}{2 - 1} \\ = \frac{ \sqrt{2} + 1 }{1} \\ = \sqrt{2} + 1 \\ = rhs \\ hence \: proved \\ \\ \\ \\ please \: mark \: as \: brainliest$

17.

Prove that 1/ root 2 -1 = root 2 + 1

Answer»

Step-by-step EXPLANATION:

$\frac{1}{ \sqrt{2} - 1 } \\ = \frac{(1 + \sqrt{2} )}{ (\sqrt{2 } - 1 )( \sqrt{2} + 1)} \\ = \frac{(1 + \sqrt{2}) }{ { (\sqrt{2}) }^{2} - ( {1}^{2}) } \\ = \frac{ \sqrt{2} + 1}{2 - 1} \\ = \frac{ \sqrt{2} + 1 }{1} \\ = \sqrt{2} + 1 \\ = rhs \\ hence \: proved \\ \\ \\ \\ please \: mark \: as \: brainliest$

Discussion

18.	41860000000 what is the standard form
Answer» ANSWER: $the \: standard \: form \: is = 4.18 \times {10}^{10}$ PLEASE MARK as BRAINLIEST

18.

41860000000 what is the standard form

Answer»

ANSWER:

$the \: standard \: form \: is = 4.18 \times {10}^{10}$

PLEASE MARK as BRAINLIEST

Discussion

19.	Write this number in words in the Indian system-9,two's in the thousand period only three in millions period .
Answer» Step-by-step EXPLANATION: Nine thousand ninety nine MILLION nine HUNDRED ninety nine thousand nine hundred ninety nine

19.

Write this number in words in the Indian system-9,two's in the thousand period only three in millions period .

Answer»

Step-by-step EXPLANATION:

Nine thousand ninety nine MILLION nine HUNDRED ninety nine thousand nine hundred ninety nine

Discussion

20.	Write a story problem using the division sentence 96.6÷7.
Answer» Step-by-step explanation: NINETY six POINT six is DIVIDED by seven.

20.

Write a story problem using the division sentence 96.6÷7.

Answer»

Step-by-step explanation:

NINETY six POINT six is DIVIDED by seven.

Discussion

21.	Find the ratio between 80 cm and 4 m
Answer» Answer: The RATIO is 1:5. Step-by-step explanation: Length 1 = 80 CM Length 2 = 4 m m to cm = 1m = 100 cm 4m = 400 cm Ratio = (Length 1/Length 2) = 80/400 = 1:5 Hope this helps.

21.

Find the ratio between 80 cm and 4 m

Answer»

Answer:

The RATIO is 1:5.

Step-by-step explanation:

Length 1 = 80 CM

Length 2 = 4 m

m to cm = 1m = 100 cm

4m = 400 cm

Ratio = (Length 1/Length 2)

= 80/400

= 1:5

Hope this helps.

Discussion

22.	The sum of two rational numbers is -6and one of them is -7 upon 2.find the other
Answer» 6/7/2-&-7899+_$#_-++;:'*389

Discussion

23.	Read these numbers.1.5278642.954323.189500494.70002509qa 1.write these numbers using placement boxes and then using commas in indian as well as international system of numeration.2.arrange these in ascending and descending order
Answer» Answer: 5,27,864 95,432 1,89,50,049 7,00,02,509

23.

Read these numbers.1.5278642.954323.189500494.70002509qa 1.write these numbers using placement boxes and then using commas in indian as well as international system of numeration.2.arrange these in ascending and descending order

Answer»

Answer:

5,27,864

95,432

1,89,50,049

7,00,02,509

Discussion

24.	Find the mean of the following data: 81,72,90,90,70,71,72,83,86,85
Answer» Add all these OBSERVATIONS and DIVIDE the SUM by number of observations . Step-by-step explanation: sum of observations = 800 number of observations =10 sum of observations /number of observations = 800/10 =80

24.

Find the mean of the following data: 81,72,90,90,70,71,72,83,86,85

Answer»

Add all these OBSERVATIONS and DIVIDE the SUM by number of observations .

Step-by-step explanation:

sum of observations = 800

number of observations =10

sum of observations /number of observations

= 800/10 =80

Discussion

25.	What does x-2=0 represent in the Cartesian plane?
Answer» Answer: It represents a straight line parallel to Y-axis Step-by-step explanation: x-2=0 IMPLIES x=2 If you plot it in the graph a straight line OBTAINED ,will be parallel to y axis with DIFFERENT values in the PLACE of y COORDINATE

25.

What does x-2=0 represent in the Cartesian plane?

Answer»

Answer:

It represents a straight line parallel to Y-axis

Step-by-step explanation:

x-2=0 IMPLIES x=2

If you plot it in the graph a straight line OBTAINED ,will be parallel to y axis with DIFFERENT values in the PLACE of y COORDINATE

Discussion

26.	Rationalise (3 +root 3 )(5 - root 2)
Answer» Step-by-step EXPLANATION: ook mark me brainliest see the IMAGE

26.

Rationalise (3 +root 3 )(5 - root 2)

Answer»

Step-by-step EXPLANATION:

ook

mark me brainliest

see the IMAGE

Discussion

27.	Use the number line to work out 5×-2
Answer» Step-by-step EXPLANATION: x=5+2 7 the ANSWER is 7 answer is 7 that is

27.

Use the number line to work out 5×-2

Answer»

Step-by-step EXPLANATION:

x=5+2

7 the ANSWER is 7 answer is 7 that is

Discussion

28.	Find the polynomial. 3x^3 + 9x^2 + x + 3
Answer» ANSWER: (x+3)(3x^2+1) Step-by-step EXPLANATION:

28.

Find the polynomial. 3x^3 + 9x^2 + x + 3

Answer»

ANSWER:

(x+3)(3x^2+1)

Step-by-step EXPLANATION:

Discussion

29.	Express 75 paisa as a percentage of Rs 5
Answer» Answer: 15% Step-by-step explanation: 5 rupees in paisa= 5100= 500 So, to take out 75 paisa as a PERCENTAGE of 500 paisa, DIVIDE 75 by 500 and MULTIPLY by 100 = 75/500 100=15% HOPE IT HELPS YOU...

29.

Express 75 paisa as a percentage of Rs 5

Answer»

Answer:

15%

Step-by-step explanation:

5 rupees in paisa= 5*100= 500

So, to take out 75 paisa as a PERCENTAGE of 500 paisa, DIVIDE 75 by 500 and MULTIPLY by 100 =

75/500* 100=15%

HOPE IT HELPS YOU...

Discussion

30.	How to find the perimeter of a rectangle those who will give answer I will mark as brainiest
Answer» ANSWER: Step-by-step EXPLANATION: PERIMETER of RECTANGLE= 2(l+b)

30.

How to find the perimeter of a rectangle those who will give answer I will mark as brainiest

Answer»

ANSWER:

Step-by-step EXPLANATION:

PERIMETER of RECTANGLE= 2(l+b)

Discussion

31.	Iftan A=✓2-1show that sin A Cos A=✓2/4
Answer» ANSWER: Step-by-step EXPLANATION: taN∧2=(√2-1)∧2 SEC∧2-1=2+1-2√2 SEC∧2=3-2√2+1 SEC∧2=4-2√2 COS∧2=4+2√2 tan A × cos∧2A =sinA × cosA (√2-1) × (4+2√2) after solving, we GET sinA × cosA=√2/4

31.

Iftan A=✓2-1show that sin A Cos A=✓2/4

Answer»

ANSWER:

Step-by-step EXPLANATION:

taN∧2=(√2-1)∧2

SEC∧2-1=2+1-2√2

SEC∧2=3-2√2+1

SEC∧2=4-2√2

COS∧2=4+2√2

tan A × cos∧2A =sinA × cosA

(√2-1) × (4+2√2)

after solving,

we GET sinA × cosA=√2/4

Discussion

32.	(i) How many cubic metres of soil must be dug out to make a well 20 metres deepand 2 metres in diameter?(ii) If the inner curved surface of the well in part (i) above is to be plastered at therate of ₹50 per ma, find the cost of plastering.
Answer» Answer: Given that, HEIGHT(H)=20m diameter (d)=2m radius (r)=2/2=1m Volume of the cylinder=πr²h =3.14×1×1×20 =31.4×2 =62.8m³ The cost of plastering per my=50Rs the cost of plastering for 62.8m³=62.8×50 =628×5=3140Rs Hope it WORKS...............................™✌️✌️

32.

(i) How many cubic metres of soil must be dug out to make a well 20 metres deepand 2 metres in diameter?(ii) If the inner curved surface of the well in part (i) above is to be plastered at therate of ₹50 per ma, find the cost of plastering.

Answer»

Answer:

Given that,

HEIGHT(H)=20m

diameter (d)=2m

radius (r)=2/2=1m

Volume of the cylinder=πr²h

=3.14×1×1×20

=31.4×2

=62.8m³

The cost of plastering per my=50Rs

the cost of plastering for 62.8m³=62.8×50

=628×5=3140Rs

Hope it WORKS...............................™✌️✌️

Discussion

33.	Formula for converting radian into degree.
Answer» Answer: 1Rad into180/π=57.296degrees Step-by-step EXPLANATION: PLZ FOLLOW N THANK

33.

Formula for converting radian into degree.

Answer»

Answer:

1Rad into180/π=57.296degrees

Step-by-step EXPLANATION:

PLZ FOLLOW N THANK

Discussion

34.	There are so many applications of differentiation (Rate of change). In your opinion how is it applied practically in your day to day life
Answer» ANSWER: PLEASE FOLLOW me _______________#______#______#_____##___

34.

There are so many applications of differentiation (Rate of change). In your opinion how is it applied practically in your day to day life

Answer»

ANSWER:

PLEASE FOLLOW me

_______________#______#______#_____##___

Discussion

35.	when a two digits number is divided by the sum of its digits , then the quotient is 8 and the remainder is 2 . If the digits are reversed and the resulting number so formed is divided by the sum of the digits , the quotient is 2 and the reamaider is 2 and the remainder is 8. Find the two digits number.
Answer» AnswEr:- Two DIGITS number = 82 $\rule{200}{2}$ Let the digit at unit's place be m & digit at ten's place be n ∴ Two digits number = m + 10n CASE 1:- • Two digits number is divided by sum of digits, quotient is 8 & REMAINDER is 2 As we know remainder formula:- ☛ Dividend = Quotient × Divisor + Remainder Here, dividend = Two digits number & divisor = Sum of digits ⇒ m + 10n = 8 × (m + n) + 2 ⇒ m + 10n = 8m + 8n + 2 ⇒ m - 8m + 10n - 8n = 2 ⇒ 2n - 7m = 2 ⇒ 2n = 7m + 2 ⇒ n = (7m + 2)/2 - - - (Eq.1) Case 2:- • Digits interchanged, two digits number is divided by sum of digits, quotient is 2 & remainder is 8. Now, when digits interchanged:- ⇒ Two digits number = 10m + n Using same formula we get:- ⇒ 10m + n = 2 × (m + n) + 8 ⇒ 10m + n = 2m + 2n + 8 ⇒ 10m - 2m + n - 2n = 8 ⇒ 8m - n = 8 ⇒ 8m = n + 8 ⇒ n = 8m - 8 - - - (Eq.2) COMPARING both equations:- ⇒ (7m + 2)/2 = 8m - 8 ⇒ 7m + 2 = 2(8m - 8) ⇒ 7m + 2 = 16m - 16 ⇒ 7m - 16m = -16 - 2 ⇒ -9m = -18 ⇒ m = -18/-9 ⇒ m = 2 So, digit at unit's place = 2 Put this value in (Eq.2) ⇒ n = 8(2) - 8 ⇒ n = 16 - 8 ⇒ n = 8 So, digit at ten's place = 8 Now two digit number:- ⇒ Two digit number = 2 + 10(8) ⇒ Two digit number = 2 + 80 ⇒ Two digit number = 82 Therefore, Two digit number = 82 .

35.

when a two digits number is divided by the sum of its digits , then the quotient is 8 and the remainder is 2 . If the digits are reversed and the resulting number so formed is divided by the sum of the digits , the quotient is 2 and the reamaider is 2 and the remainder is 8. Find the two digits number.

Answer»

AnswEr:-

Two DIGITS number = 82

$\rule{200}{2}$

Let the digit at unit's place be m & digit at ten's place be n

∴ Two digits number = m + 10n

CASE 1:-

• Two digits number is divided by sum of digits, quotient is 8 & REMAINDER is 2

As we know remainder formula:-

☛ Dividend = Quotient × Divisor + Remainder

Here, dividend = Two digits number & divisor = Sum of digits

⇒ m + 10n = 8 × (m + n) + 2

⇒ m + 10n = 8m + 8n + 2

⇒ m - 8m + 10n - 8n = 2

⇒ 2n - 7m = 2

⇒ 2n = 7m + 2

⇒ n = (7m + 2)/2 - - - (Eq.1)

Case 2:-

• Digits interchanged, two digits number is divided by sum of digits, quotient is 2 & remainder is 8.

Now, when digits interchanged:-

⇒ Two digits number = 10m + n

Using same formula we get:-

⇒ 10m + n = 2 × (m + n) + 8

⇒ 10m + n = 2m + 2n + 8

⇒ 10m - 2m + n - 2n = 8

⇒ 8m - n = 8

⇒ 8m = n + 8

⇒ n = 8m - 8 - - - (Eq.2)

COMPARING both equations:-

⇒ (7m + 2)/2 = 8m - 8

⇒ 7m + 2 = 2(8m - 8)

⇒ 7m + 2 = 16m - 16

⇒ 7m - 16m = -16 - 2

⇒ -9m = -18

⇒ m = -18/-9

⇒ m = 2

So, digit at unit's place = 2

Put this value in (Eq.2)

⇒ n = 8(2) - 8

⇒ n = 16 - 8

⇒ n = 8

So, digit at ten's place = 8

Now two digit number:-

⇒ Two digit number = 2 + 10(8)

⇒ Two digit number = 2 + 80

⇒ Two digit number = 82

Therefore,

Two digit number = 82 .

Discussion

36.	12\13×13\12 solve the problem.
Answer» ANSWER: REQUIRED answer is 1(ONE)

36.

12\13×13\12 solve the problem.

Answer»

ANSWER:

REQUIRED answer is 1(ONE)

Discussion

37.	If y= √x-1/√x find dy/dx
Answer» ANSWER: - 1 \2 SQRT{X} ...by u/v

37.

If y= √x-1/√x find dy/dx

Answer»

ANSWER:

- 1 \2 SQRT{X} ...by u/v

Discussion

38.	Cubic poly x = f(y) cuts y-axis at almost(a) one point (b) two points(c) three points (d) four pointsplease help me
Answer» ANSWER: a) ONE POINT ..................

38.

Cubic poly x = f(y) cuts y-axis at almost(a) one point (b) two points(c) three points (d) four pointsplease help me

Answer»

ANSWER:

a) ONE POINT ..................

Discussion

39.	The wages of 10 worker for a 6 days week is Rs.1200. What are one days wage for 4 workers
Answer» Wages of 10 workers for 6 days = 1200 Rs. Wages of 10 workers for 1 day = 1200 / 6 = 200 Rs. Wages of 1 WORKER for 1 day = 200 / 10 = 20 Rs. Wages of 4 workers for 1 day = 20 * 4 = 80 Rs. HOPE YOU LIKE IT ! PLZ MARK ME BRAINLIEST !

39.

The wages of 10 worker for a 6 days week is Rs.1200. What are one days wage for 4 workers

Answer»

Wages of 10 workers for 6 days = 1200 Rs.

Wages of 10 workers for 1 day = 1200 / 6 = 200 Rs.

Wages of 1 WORKER for 1 day = 200 / 10 = 20 Rs.

Wages of 4 workers for 1 day = 20 * 4 = 80 Rs.

HOPE YOU LIKE IT !

PLZ MARK ME BRAINLIEST !

Discussion

40.	A circle is centred (2, 3) and radius 7 units. Is (8, 2) coordinate a point in this circle?
Answer» ANSWER: no the GIVEN POINT is not on the CIRCLE

40.

A circle is centred (2, 3) and radius 7 units. Is (8, 2) coordinate a point in this circle?

Answer»

ANSWER:

no the GIVEN POINT is not on the CIRCLE

Discussion

41.	Two seven in the 70674
Answer» ANSWER: YES...................................

41.

Two seven in the 70674

Answer»

ANSWER:

YES...................................

Discussion

42.	In a rectangle ABCD , AB= 7cm and AB AD= 25cm. find theheight of a triangle whose base is AB and whosearea is two times the area of the rectangle ABCD.
Answer» Answer: height of TRIANGLE : 100 Step-by-step explanation: area of rectangle. = l × b = 25 × 7 = 175 BASE of triangle = AB = 7CM area of triangle. = 2 × (area of rectangle) 1/2 × base × height = 2 × 175 1/2 × 7 × height = 350 height. = 350 × 2/7 = 700/7 =

42.

In a rectangle ABCD , AB= 7cm and AB AD= 25cm. find theheight of a triangle whose base is AB and whosearea is two times the area of the rectangle ABCD.

Answer»

Answer:

height of TRIANGLE : 100

Step-by-step explanation:

area of rectangle. = l × b

= 25 × 7

= 175

BASE of triangle = AB = 7CM

area of triangle. = 2 × (area of rectangle)

1/2 × base × height = 2 × 175

1/2 × 7 × height = 350

height. = 350 × 2/7

= 700/7

=

Discussion

43.	2 cube root 54 +3 cube root 16 + 5 cube root 128
Answer» ANSWER: $32\sqrt[3]{2}$ Step-by-step EXPLANATION: You can FOLLOW the ATTACHMENT for the steps. Thank you .

43.

2 cube root 54 +3 cube root 16 + 5 cube root 128

Answer»

ANSWER:

$32\sqrt[3]{2}$

Step-by-step EXPLANATION:

You can FOLLOW the ATTACHMENT for the steps.

Thank you .

Discussion

44.	25. किसी लंबवृत्तीय शंकु की ऊंचाई तथा आधार का अर्द्धव्यास क्रमशः 12 सेमी तथा 6 सेमी है। आधार से 3 सेमी की दूरी पर आधार के समानांतर एक समतल द्वारा शंकु की वृत्ताकार अनुप्रस्थ काट का अर्द्धव्यास होगा?
Answer» ANSWER: Djhjsjsjskjjuapqpowjsjssjaiosooopqpqooaiiusiisssso9ønskoooosooskkkskklslaukksoos

44.

25. किसी लंबवृत्तीय शंकु की ऊंचाई तथा आधार का अर्द्धव्यास क्रमशः 12 सेमी तथा 6 सेमी है। आधार से 3 सेमी की दूरी पर आधार के समानांतर एक समतल द्वारा शंकु की वृत्ताकार अनुप्रस्थ काट का अर्द्धव्यास होगा?

Answer»

ANSWER:

Djhjsjsjskjjuapqpowjsjssjaiosooopqpqooaiiusiisssso9ønskoooosooskkkskklslaukksoos

Discussion

45.	please answer the questions please and explain it also! if you want brainlist so answer questions please!for 20 points.
Answer» <P>Answer: 12.5 % Step-by-step explanation: ${\underline{{\text{Given}}}}$ Principal (P) = RS 102400 AMOUNT (A) = Rs 145800 Time (t) = 3 yr ${\underline{{\text{To Find:}}}}$ Rate of compound INTEREST ${\underline{{\text{Solution:}}}}$ let, the rate of interest be x % per annum. As we KNOW, $\boxed{A = P(1+\frac{r}{100})^{t}}$ Where, A = Amount P = Principal r = rate of interest t = time So, ${ 145800= 102400(1+\frac{x}{100})^{3}} \\ \\ \frac{145800}{102400} = (1+\frac{x}{100})^{3} \\ \\ \frac{1458}{1024} = (1+\frac{x}{100})^{3} \\ \\ \frac{729}{512} = (1+\frac{x}{100})^{3} \\ \\ {( \frac{9}{8} )}^{3} = (1+\frac{x}{100})^{3} \\ \\ \frac{9}{8} = 1+\frac{x}{100} \\ \\ \frac{9}{8} - 1 = \frac{x}{100} \\ \\ \frac{1}{8} = \frac{x}{100} \\ \\ x = \frac{100}{8} \\ \\ x = 12.5 \\ \\ \therefore \: \text{The required rate of interest is 12.5 \% per annum}$

45.

please answer the questions please and explain it also! if you want brainlist so answer questions please!for 20 points.

Answer»

<P>Answer:

12.5 %

Step-by-step explanation:

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

Principal (P) = RS 102400

AMOUNT (A) = Rs 145800

Time (t) = 3 yr

${\underline{{\text{To Find:}}}}$

Rate of compound INTEREST

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

let, the rate of interest be x % per annum.

As we KNOW,

$\boxed{A = P(1+\frac{r}{100})^{t}}$

Where, A = Amount

P = Principal

r = rate of interest

t = time

So,

${ 145800= 102400(1+\frac{x}{100})^{3}} \\ \\ \frac{145800}{102400} = (1+\frac{x}{100})^{3} \\ \\ \frac{1458}{1024} = (1+\frac{x}{100})^{3} \\ \\ \frac{729}{512} = (1+\frac{x}{100})^{3} \\ \\ {( \frac{9}{8} )}^{3} = (1+\frac{x}{100})^{3} \\ \\ \frac{9}{8} = 1+\frac{x}{100} \\ \\ \frac{9}{8} - 1 = \frac{x}{100} \\ \\ \frac{1}{8} = \frac{x}{100} \\ \\ x = \frac{100}{8} \\ \\ x = 12.5 \\ \\ \therefore \: \text{The required rate of interest is 12.5 \% per annum}$

Discussion

46.	Please give me the answer Find 75% of 1kg
Answer» ANSWER: tge answer will be 750 grams or 0.75kg. if POSSIBLE MARK it as the brainliest

46.

Please give me the answer Find 75% of 1kg

Answer»

ANSWER:

tge answer will be 750 grams or 0.75kg.

if POSSIBLE MARK it as the brainliest

Discussion

47.	Iftan A = √2-1, showthatsin A Cos A =✓2/4
Answer» PLS SUBSCRIBE to my youtube CHANNEL DIGNIFIED ARYAN

47.

Iftan A = √2-1, showthatsin A Cos A =✓2/4

Answer»

PLS SUBSCRIBE to my youtube CHANNEL DIGNIFIED ARYAN

Discussion

48.	Find all the zeroes of the polynomial x^4+2x^3-17x^2-4x+30, given that two of its zeroes are 3 and -5
Answer» Xsquare+2x-15 Xsquare+5x-3x-15 X(x+5)-3(x+5) X-3=0. X+5=0 X=3. X=-5 I HOPE it's HELP you PLZ MARK me as a brainest

48.

Find all the zeroes of the polynomial x^4+2x^3-17x^2-4x+30, given that two of its zeroes are 3 and -5

Answer»

Xsquare+2x-15

Xsquare+5x-3x-15

X(x+5)-3(x+5)

X-3=0. X+5=0

X=3. X=-5

I HOPE it's HELP you

PLZ MARK me as a brainest

Discussion

49.	05. Express 5 2/3hrs in minutes
Answer» Answer: HEY mate here is your answer..... 1hr = 3600 min 52/3 HR = 3600×52/3 = 62400 min Hope it helps you.....

49.

05. Express 5 2/3hrs in minutes

Answer»

Answer:

HEY mate here is your answer.....

1hr = 3600 min

52/3 HR = 3600×52/3 = 62400 min

Hope it helps you.....

Discussion

50.	A line passes through the points (16, c) and (18, 23) and has a slope of 2/3 . find the value of c.
Answer» ANSWER: (16,C) and (18,23) slope=y2-y1/x2-x1 2/3=23-c/18-16 2/3=23-c/2 by cross multiplication, 2×2=3(23-c) 4=69-3c 3c=69-4 3c=65 c=65/3 therefore, the required value of c=65/3 Hope it works..................................™✌️✌️

50.

A line passes through the points (16, c) and (18, 23) and has a slope of 2/3 . find the value of c.

Answer»

ANSWER:

(16,C) and (18,23)

slope=y2-y1/x2-x1

2/3=23-c/18-16

2/3=23-c/2

by cross multiplication,

2×2=3(23-c)

4=69-3c

3c=69-4

3c=65

c=65/3

therefore, the required value of c=65/3

Hope it works..................................™✌️✌️

Discussion

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