332354 + Interview Questions in Secondary School in Math

1.	*I Sin 30 cos 45 + sin 45' CS 30'find the value
Answer» ONG>ANSWER: Answer is √3/2√2 Step-by-step EXPLANATION: sin30cos45+sin45cos30 =1/2 X 1/√2 + 1/√2 x √3/2 = 1/2√2 + √3/2√2 = √3/2√2

1.

*I Sin 30 cos 45 + sin 45' CS 30'find the value

Answer» ONG>ANSWER:

Answer is √3/2√2

Step-by-step EXPLANATION:

sin30cos45+sin45cos30

=1/2 X 1/√2 + 1/√2 x √3/2

= 1/2√2 + √3/2√2

= √3/2√2

Discussion

2.	Does 5047/3500 have a terminating or non terminating decimal. If yes after how many places will it terminate?
Answer» ong>ANSWER: Yes, It has a terminating decimal because A rational number will have terminating decimal expansion, if the factors of the denominator is in the form of $2^{n}5^{m}$ . The decimal expansion of 5047/3500 will terminate after 3 places.* Step-by-step explanation: 5047/3500, this can be divided by 7 as there is 7 as a factor in both numbers. 721/500, now the denominator contains the factors, 4 and 125, which can be written in the form $2^{2}5^{3}$ . Now we should make the powers of $2^{2}5^{3}$ equal. To make that we NEED to multiply 2 to $2^{2}5^{3}$ and to the NUMERATOR also. Then it will become $2^{3}5^{3}$ and the numerator will become 7212= 1442 Now, 1442 / $(25)^{3}$ =1442/ $10^{3}$ , now the decimal expansion will terminate after 3 places, because the 10 is raised to the POWER of 3.

2.

Does 5047/3500 have a terminating or non terminating decimal. If yes after how many places will it terminate?

Answer»

ong>ANSWER:

Yes, It has a terminating decimal because A rational number will have terminating decimal expansion, if the factors of the denominator is in the form of $2^{n}*5^{m}$ . The decimal expansion of 5047/3500 will terminate after 3 places.

Step-by-step explanation:

5047/3500, this can be divided by 7 as there is 7 as a factor in both numbers.

721/500, now the denominator contains the factors, 4 and 125, which can be written in the form $2^{2}*5^{3}$ .

Now we should make the powers of $2^{2}*5^{3}$ equal.

To make that we NEED to multiply 2 to $2^{2}*5^{3}$ and to the NUMERATOR also.

Then it will become $2^{3}*5^{3}$ and the numerator will become 721*2= 1442

Now, 1442 / $(2*5)^{3}$ =1442/ $10^{3}$ , now the decimal expansion will terminate after 3 places, because the 10 is raised to the POWER of 3.

Discussion

3.	ब) पुढील उपप्रश्न सोडवा.i) जर 4x +2y= 8 आणि 2x +4y= 10 असेल तर x + y ची किंमत काढा.
Answer» ong>Answer: x+y = 3 Step-by-step explanation: 4x + 2y = 8 + 2x + 4Y = 10 _____________ 6x + 6Y = 18 6( x+y) = 18 x+ y = 18/6 x+y = 3

3.

ब) पुढील उपप्रश्न सोडवा.i) जर 4x +2y= 8 आणि 2x +4y= 10 असेल तर x + y ची किंमत काढा.

Answer»

ong>Answer:

x+y = 3

Step-by-step explanation:

4x + 2y = 8

+ 2x + 4Y = 10

_____________

6x + 6Y = 18

6( x+y) = 18

x+ y = 18/6

x+y = 3

Discussion

4.	15 men can finish the work in 40 days. the number of days in which the piece of work can be done by 20 men. Note: Do it step by step..
Answer» ER of MEN. time(days) 15. 40 20. ?(X) number of men and time is in direct proportion 15:20::40:x therefore time=20×40/15=54 days

4.

15 men can finish the work in 40 days. the number of days in which the piece of work can be done by 20 men. Note: Do it step by step..

Answer» ER of MEN. time(days)

15. 40

20. ?(X)

number of men and time is in direct proportion

15:20::40:x

therefore time=20×40/15=54 days

Discussion

5.	p² / 4 + p / 3 + 1/9 is an expansion of which binomial? 1️⃣ (p/2 + 1/3)²2️⃣ (p/2 - 1/3)²3️⃣ (p/4 + 1/9)²4️⃣ none of the above
Answer» ONG>Answer: 1 Step-by-step EXPLANATION: (a+b) ^2 = a^2 + 2AB + b^2

5.

p² / 4 + p / 3 + 1/9 is an expansion of which binomial? 1️⃣ (p/2 + 1/3)²2️⃣ (p/2 - 1/3)²3️⃣ (p/4 + 1/9)²4️⃣ none of the above

Answer» ONG>Answer:

1

Step-by-step EXPLANATION:

(a+b) ^2 = a^2 + 2AB + b^2

Discussion

6.	Decide the orderly relationship between 5/4 & 11/12 . 1️⃣ 5/4 > 11/122️⃣ 5/4 < 11/123️⃣ 5/4 = 11/12
Answer» ONG>Question :- Decide the ORDERLY relationship between 5/4 & 11/12 .* 1) 5/4 > 11/12 2) 5/4 < 11/12 3) 5/4 = 11/12 Solution :- → 5/4 and 11/12 making both denominator same , 5/4 = multiply and divide by 3 11/12 = multiply and divide by 1 . we get, → (5/4) * (3/3) and (11/12) * (1/1) → (15 / 12) and (11/12) since, → 15 > 12 . THEREFORE, → (15/12) > (11/12) or, we can conclude that, → 5/4 > 11/12 (Option 1) (Ans.) Learn more :- Decide the orderly relationship between 5/4 & 11/12 . 1️⃣ 5/4 > 11/12 2️⃣ 5/4 < 11/12 3️⃣ 5/4 = 11/12 brainly.in/question/37825417

6.

Decide the orderly relationship between 5/4 & 11/12 . 1️⃣ 5/4 > 11/122️⃣ 5/4 < 11/123️⃣ 5/4 = 11/12

Answer» ONG>Question :- Decide the ORDERLY relationship between 5/4 & 11/12 .*

1) 5/4 > 11/12

2) 5/4 < 11/12

3) 5/4 = 11/12

Solution :-

→ 5/4 and 11/12

making both denominator same ,

5/4 = multiply and divide by 3
11/12 = multiply and divide by 1 .

we get,

→ (5/4) * (3/3) and (11/12) * (1/1)

→ (15 / 12) and (11/12)

since,

→ 15 > 12 .

THEREFORE,

→ (15/12) > (11/12)

or, we can conclude that,

→ 5/4 > 11/12 (Option 1) (Ans.)

Learn more :-

Decide the orderly relationship between 5/4 & 11/12 .

1️⃣ 5/4 > 11/12

2️⃣ 5/4 < 11/12

3️⃣ 5/4 = 11/12

brainly.in/question/37825417

Discussion

7.	6) If side of a square is 10cm then diagonalof a square isO20O 10V 210205
Answer» me as brainlist. THIA answer is correct as i DONT KNOW the formulae for DIAGONAL but .... i have done this by alternative METHOD

Discussion

8.	15) Hypolenuse of a right angled triangle is 1 less than twice its small side.Third side is 1 more than its small sidea) If the small side is what is the length of other two sides.b) Form an equation connecting the length of the sides.c) Calculate the length of the sides of the triangle.
Answer» ONG>Step-by-step EXPLANATION: soryyyyyyyyyyyyyyyyy

Discussion

9.	Write the equations for the statement “ The sum of numbers x and 4 is 9”.
Answer» ONG>ANSWER: the CORRECT equation for the STATEMENT will be: x+4=9

9.

Write the equations for the statement “ The sum of numbers x and 4 is 9”.

Answer» ONG>ANSWER:

the CORRECT equation for the STATEMENT will be:

x+4=9

Discussion

10.	A upon b = 3 upon 4 3a upon 4b =
Answer» ONG>Answer: If a : B = 3 : 4 then find (3a+4b)/(4a-b) - DOUBTNUT

10.

A upon b = 3 upon 4 3a upon 4b =

Answer» ONG>Answer:

If a : B = 3 : 4 then find (3a+4b)/(4a-b) - DOUBTNUT

Discussion

11.	3) બે રેખાઓ x + 2 + 7 = 0 અને 2x + my + 18 = 0 એકબીજીનેછેદતી નથી, તો પણ m નું મૂલ્ય 4 મળે છે.'
Answer» ONG>ANSWER: jzjbvxvshdduwudydbfhcbxbxbx xvxnnsncnxbbxbxbxbdbfhfheudvgxvxcvxdbdhfvccnnxjxh Step-by-step EXPLANATION: cbfhfhddhbdhxhcncjcnfncncnhgjhgjfjsuxvnwcibrjvjoscnrjeudcgdbhdbfhfvjnfvbgnbfhdhhfjfjdjdffjjfj

11.

3) બે રેખાઓ x + 2 + 7 = 0 અને 2x + my + 18 = 0 એકબીજીનેછેદતી નથી, તો પણ m નું મૂલ્ય 4 મળે છે.'

Answer» ONG>ANSWER:

jzjbvxvshdduwudydbfhcbxbxbx xvxnnsncnxbbxbxbxbdbfhfheudvgxvxcvxdbdhfvccnnxjxh

Step-by-step EXPLANATION:

cbfhfhddhbdhxhcncjcnfncncnhgjhgjfjsuxvnwcibrjvjoscnrjeudcgdbhdbfhfvjnfvbgnbfhdhhfjfjdjdffjjfj

Discussion

12.	Multiply (4xy+ 3x'y)(5xy -3x)
Answer» ong>Answer: ANSWER = > 7x²y(5Y — 3) or 35x²y² — 21x²y $answer \: = > \\ \huge \: 7x {}^{2} y(5y - 3) \\ or \\ \huge \: 35x {}^{2} y - 21x {}^{2} y$ Step-by-step explanation: for DETAILED explanation check the ATTACHMENT,,, HOPE it's helpful,,, @— $\huge \: op \: boy$

12.

Multiply (4xy+ 3x'y)(5xy -3x)

Answer»

ong>Answer:

ANSWER = >

7x²y(5Y — 3)

or

35x²y² — 21x²y

$answer \: = > \\ \huge \: 7x {}^{2} y(5y - 3) \\ or \\ \huge \: 35x {}^{2} y - 21x {}^{2} y$

Step-by-step explanation:

for DETAILED explanation check the ATTACHMENT,,,

HOPE it's helpful,,,

@—

$\huge \: op \: boy$

Discussion

13.	A test tube has a diameter of 20mm and a height of 15cm.the lower portion is a hemisphere .find the capacity of the test tube .
Answer» ONG>Step-by-step EXPLANATION: hfhddudut to ututuyutufyrutytytytytytytytutututu

Discussion

14.	Find the range of the following data: 55,36,95,73,60,42,25,78
Answer» ONG>ANSWER: Range = 95 - 25. Range = 70 Step-by-step explanation: pls follow and MAKE me brainleast

14.

Find the range of the following data: 55,36,95,73,60,42,25,78

Answer» ONG>ANSWER:

Range = 95 - 25. Range = 70

Step-by-step explanation:

pls follow and MAKE me brainleast

Discussion

15.	p² / 4 + p / 3 + 1/9 is an expansion of which binomial?
Answer» ONG>ANSWER: ( p/2 + 1/3 ) ^2 Step-by-step explanation: simple expansion

15.

p² / 4 + p / 3 + 1/9 is an expansion of which binomial?

Answer» ONG>ANSWER:

( p/2 + 1/3 ) ^2

Step-by-step explanation:

simple expansion

Discussion

16.	Area of sector of circle is 0/360° ×nr^2true or false
Answer» ong>ANSWER: AREA of sector of CIRCLE is 0/360° ×nr^2 this is True because angle os sector of circle can 0° Formula; theeta/360° ×nr^2

16.

Area of sector of circle is 0/360° ×nr^2true or false

Answer»

ong>ANSWER:

AREA of sector of CIRCLE is 0/360° ×nr^2

this is True because angle os sector of circle can 0°

Formula;

theeta/360° ×nr^2

Discussion

17.	Find the compound interest on ₹3125 for 3 years if the rates of interest for the first year, second year and third year are respectively 4%,5% and 6% per annum
Answer» ong>Answer: HOPE it useful MEANS MARK as brainlist please. Step-by-step explanation: It is given that PRINCIPAL (P) = 3125 Rate of interest for continuous = 4%,5% and 6% Period (n) = 3 years We know that Amount = P(1+r/100)n SUBSTITUTING the values =3125(1+4/100)(1+5/100)(1+6/100) By further calculation =3125×26/25×21/20×53/50 = 3617.25 Here CI=A−P Substituting the values =3617.25−3125 =492.25

17.

Find the compound interest on ₹3125 for 3 years if the rates of interest for the first year, second year and third year are respectively 4%,5% and 6% per annum

Answer»

ong>Answer:

HOPE it useful MEANS MARK as brainlist please.

Step-by-step explanation:

It is given that

PRINCIPAL (P) = 3125

Rate of interest for continuous = 4%,5% and 6%

Period (n) = 3 years

We know that

Amount = P(1+r/100)n

SUBSTITUTING the values

=3125(1+4/100)(1+5/100)(1+6/100)

By further calculation

=3125×26/25×21/20×53/50

= 3617.25

Here

CI=A−P

Substituting the values

=3617.25−3125

=492.25

Discussion

18.	A:b=2:3 and c:b=5:6 then a:b:c=?
Answer» ONG>Step-by-step EXPLANATION: a:B=2:3 C:b=5:6 a:b=2:3×6 c:b=5:6×3 a:b:c=12:18:18

18.

A:b=2:3 and c:b=5:6 then a:b:c=?

Answer» ONG>Step-by-step EXPLANATION:

a:B=2:3

C:b=5:6

a:b=2:3×6

c:b=5:6×3

a:b:c=12:18:18

Discussion

19.	Describe the nature of roots of 9x2+7x - 2=0
Answer» ONG>Answer: The roots of this QUADRATIC equation are real and different because D > 0. Step-by-step explanation:

19.

Describe the nature of roots of 9x2+7x - 2=0

Answer» ONG>Answer:

The roots of this QUADRATIC equation are real and different because D > 0.

Step-by-step explanation:

Discussion

20.	Let S = {1,2,3,...,12). How many functions f: S -> S are there such that f(f(x)) = x and f(x) – X is not divisibleby 3?
Answer» ONG>ANSWER: gtdtdsyugfrsyduguvfxrzyfugugugugyfyfyfgcyfyfyfyfyfyfyfyfyfyfyfyguguguguguhyfrstxyg

Discussion

21.	एका पिशवीमध्ये 5 लालआणि 3 काळे चेंडू आहेत. तर काळा चेंडू काढण्याची संभाव्यता ……….. आहे 1️⃣ 5/82️⃣ 1/23️⃣ 3/84️⃣ यापैकी नाही
Answer» ER: Step-by-step explanation: 3) 3/8

21.

एका पिशवीमध्ये 5 लालआणि 3 काळे चेंडू आहेत. तर काळा चेंडू काढण्याची संभाव्यता ……….. आहे 1️⃣ 5/82️⃣ 1/23️⃣ 3/84️⃣ यापैकी नाही

Answer» ER:

Step-by-step explanation:

3) 3/8

Discussion

22.	Simplify: 2/(x-3) - 3/(x+1)
Answer» ONG>Step-by-step explanation: 2/x-3-3/x+1 =2(x+1)-3(x-3)/(x-3)(x+1) =2x+2-3x+9/(x-3)(x+1) =11-x/(x-3)(x+1)

22.

Simplify: 2/(x-3) - 3/(x+1)

Answer» ONG>Step-by-step explanation:

2/x-3-3/x+1

=2(x+1)-3(x-3)/(x-3)(x+1)

=2x+2-3x+9/(x-3)(x+1)

=11-x/(x-3)(x+1)

Discussion

23.	Core: 2) 2. The sides of a rectangle are in the ratio 2:3a) If the breadth is 2a, what is the length?b) If the perimeter of the rectangle is 40cm, find the length and breadth?
Answer» ONG>ANSWER: a) LET the sides of the rectangle be 2x and 3x then, A.T.Q- breadth=2x=2a x=a then,3x=3a b)given- perimeter of the rectangle=40cm now, according to above solution ,sides of rectangle= 3a and 2a then, 3a+2a=40 5a=40 a=8 sides- length=3a=24cm breadth=2a=16cm

23.

Core: 2) 2. The sides of a rectangle are in the ratio 2:3a) If the breadth is 2a, what is the length?b) If the perimeter of the rectangle is 40cm, find the length and breadth?

Answer» ONG>ANSWER:

a) LET the sides of the rectangle be 2x and 3x

then,

A.T.Q-

breadth=2x=2a

x=a

then,3x=3a

b)given-

perimeter of the rectangle=40cm

now,

according to above solution ,sides of rectangle=

3a and 2a

then,

3a+2a=40

5a=40

a=8

sides-

length=3a=24cm

breadth=2a=16cm

Discussion

24.	2.machines are oiled from thme to time
Answer» ONG>ANSWER: So as to prevent friction and rust from damaging them. hope this HELPS you please mark me as BRAINLIEST

24.

2.machines are oiled from thme to time

Answer» ONG>ANSWER:

So as to prevent friction and rust from damaging them.

hope this HELPS you

please mark me as BRAINLIEST

Discussion

25.	Bank difficult question.
Answer» unit DIGIT in the sum is D)0 please MAKE me BRIANLIEST

25.

Bank difficult question.

Answer»

unit DIGIT in the sum is D)0

please MAKE me BRIANLIEST

Discussion

26.	2tan 45º + cos45° - sin45º =0O2013
Answer» ONG>ANSWER: so you WANT STEP by step or only answer

Discussion

27.	How 23%can be written as decimal point ?
Answer» > 23% = 0.23 in decimal FORM. Percent means 'PER 100'. So, 23% means 23 per 100 or simply 23/100. If you DIVIDE 23 by 100, you'll get 0.23 (a decimal number).

27.

How 23%can be written as decimal point ?

Answer»

>

23% = 0.23 in decimal FORM. Percent means 'PER 100'. So, 23% means 23 per 100 or simply 23/100. If you DIVIDE 23 by 100, you'll get 0.23 (a decimal number).

Discussion

28.	Pls answer questions with full working all questiins
Answer» ONG>ANSWER: HOPE it HELPS you!!!!!!

28.

Pls answer questions with full working all questiins

Answer» ONG>ANSWER:

HOPE it HELPS you!!!!!!

Discussion

29.	Prove factor or does not factorExample:1) p(1)=0. (x-1) is a factor
Answer» STREAM DYNAMITE

Discussion

30.	If two coins are tossed , find the probability of the event "getting at most one head."
Answer» ong>Answer: 3/4 Step-by-step explanation: SAMPLE SPACE= {HH , HT ,TT ,TH} n(S) = 4 getting atleast ONE HEAD = {HH,HT,TT} n(A) = 3 probability =n(A)/n(S) =3/4

30.

If two coins are tossed , find the probability of the event "getting at most one head."

Answer»

ong>Answer:

3/4

Step-by-step explanation:

SAMPLE SPACE= {HH , HT ,TT ,TH} n(S) = 4

getting atleast ONE HEAD = {HH,HT,TT} n(A) = 3

probability =n(A)/n(S) =3/4

Discussion

31.	Q.4 ) Write the multiplication and division sentences,a) 10 groups of 7
Answer» ONG>Step-by-step EXPLANATION: hope it is HELPFUL to you OK

Discussion

32.	115' angle is an example of :
Answer» ong>ANSWER: It's an EXAMPLE for obtuse ANGLE Step-by-step explanation: Because 0-90 are called Acute angle 90 is called RIGHT angle 90-180 are called obtuse angle

32.

115' angle is an example of :

Answer»

ong>ANSWER:

It's an EXAMPLE for obtuse ANGLE

Step-by-step explanation:

Because 0-90 are called Acute angle

90 is called RIGHT angle

90-180 are called obtuse angle

Discussion

33.	The distance between two parallel tangents of a circle of radius 4 cm is ……… 1️⃣ 2 cm2️⃣ 4 cm3️⃣ 6 cm4️⃣ 8 cm
Answer» ANSWER is 8 CM , PLEASE FOLLOWING me

Discussion

34.	Tiham and Shakur play a game. First, Tiham chooses any positive integer a with 1 < a ≤ 58. Then Shakur chooses a positiveinteger b with b < a. Let f(a, b) be the smallest positive integer{bf(a,b)÷a}such that is an integer. Tiham's goal is to make f(a,b)as large as possible while Shakur's goal is to make f(a, b) assmall as possible. What value should Tiham choose for a?
Answer» ONG>ANSWER: HAPPY HOLI.... TOO ALL MY FRIENDS...

34.

Tiham and Shakur play a game. First, Tiham chooses any positive integer a with 1 < a ≤ 58. Then Shakur chooses a positiveinteger b with b < a. Let f(a, b) be the smallest positive integer{bf(a,b)÷a}such that is an integer. Tiham's goal is to make f(a,b)as large as possible while Shakur's goal is to make f(a, b) assmall as possible. What value should Tiham choose for a?

Answer» ONG>ANSWER:

HAPPY HOLI....

TOO ALL MY FRIENDS...

Discussion

35.	What is Photosynthesis ???•HLO GUYS....●●●
Answer» ong>Answer: here is your answer Step-by-step explanation: the PROCESS by which green plants turn CARBON DIOXIDE and water into food USING energy from SUNLIGHT

35.

What is Photosynthesis ???•HLO GUYS....●●●

Answer»

ong>Answer:

here is your answer

Step-by-step explanation:

the PROCESS by which green plants turn CARBON DIOXIDE and water into food USING energy from SUNLIGHT

Discussion

36.	C) When we write LA= LB, we actually mean
Answer» ER: They are CONGRUENT.

36.

C) When we write LA= LB, we actually mean

Answer» ER: They are CONGRUENT.

Discussion

37.	• Contract costing useful in
Answer» ong>ANSWER: Contract COSTING is a specialized SYSTEM jod costing applies to long -TEARM contract as distinct from SHORT -tearm jod.

37.

• Contract costing useful in

Answer»

ong>ANSWER:

Contract COSTING is a specialized SYSTEM jod costing applies to long -TEARM contract as distinct from SHORT -tearm jod.

Discussion

38.	A circular garden of diameter 10units is surrounded by a pathway that is 2units wide. Assuming that the center of the garden is at the origin, give the equation that describe the bigger circle.
Answer» ong>Answer: 24pi Step-by-step explanation: As you can SEE there are two CONCENTRIC circles (i.e. with same centre). Let the radius of outer circle be R and inner circle be r. r = 10/2 = 5m R = 5 (radius of inner circle) + 2 (width of the PATH) = 7m Area of the path = Area of Outer circle - Area of Inner circle = pi * (R)^2 - pi * (r)^2 = pi * (7)^2 - pi * (5)^2 = 49* (pi) - 25* (pi) = 24pi

38.

A circular garden of diameter 10units is surrounded by a pathway that is 2units wide. Assuming that the center of the garden is at the origin, give the equation that describe the bigger circle.

Answer»

ong>Answer:

24pi

Step-by-step explanation:

As you can SEE there are two CONCENTRIC circles (i.e. with same centre). Let the radius of outer circle be R and inner circle be r.

r = 10/2 = 5m

R = 5 (radius of inner circle) + 2 (width of the PATH) = 7m

Area of the path = Area of Outer circle - Area of Inner circle

= pi * (R)^2 - pi * (r)^2

= pi * (7)^2 - pi * (5)^2

= 49* (pi) - 25* (pi)

= 24pi

Discussion

39.	a 16m deep well with diameter 3.5m is dug up and the earth out of it is spread evenly to form a plateform 27.5m by 7m . Find the height of the platform.
Answer» wer : 0.8 m✔✔ ___________________________ Solution : As we KNOW that : Well is in the shape of CYLINDER GIVEN that : Height of well = 16 m. And Diameter = 3.5m => Radius = 3.5/2 = 1.75 m Now, Volume of Well (Cylinder) : $\pi {r}^{2} h \\ \\ = > \frac{22}{7} \times {(1.75)}^{2} \times 16....(1)$ Also Given that : As the well SPREAD evenly to form a plateform Let, the height of plateform be x m. Volume of plateform : $27.5 \times 7 \times x = 192.5x$ ATQ : $\frac{22}{7} \times {(1.75)}^{2} \times 16 = 192.5x \\ \\ = > x = \frac{22 \times 1.75 \times 1.75 \times 16}{7 \times 192.5} = 0.8$ So, the height of plateform will be 0.8 m. ✔ _________________________________ Hope it helps ☺ Fóllòw Më ❤

39.

a 16m deep well with diameter 3.5m is dug up and the earth out of it is spread evenly to form a plateform 27.5m by 7m . Find the height of the platform.

Answer»

wer : 0.8 m✔✔

___________________________

Solution :

As we KNOW that :

Well is in the shape of CYLINDER

GIVEN that :

Height of well = 16 m.

And Diameter = 3.5m => Radius = 3.5/2 = 1.75 m

Now, Volume of Well (Cylinder) :

$\pi {r}^{2} h \\ \\ = > \frac{22}{7} \times {(1.75)}^{2} \times 16....(1)$

Also Given that :

As the well SPREAD evenly to form a plateform

Let, the height of plateform be x m.

Volume of plateform :

$27.5 \times 7 \times x = 192.5x$

ATQ :

$\frac{22}{7} \times {(1.75)}^{2} \times 16 = 192.5x \\ \\ = > x = \frac{22 \times 1.75 \times 1.75 \times 16}{7 \times 192.5} = 0.8$

So, the height of plateform will be 0.8 m. ✔

_________________________________

Hope it helps ☺

Fóllòw Më ❤

Discussion

40.	Simplify √7 + √3 / √7 - √3 + √4 + √5 / √4 -√5 plz give real ans.
Answer» ong>GIVEN, $\frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \\$ To FIND, RATIONALIZE and Solve the Following Solution, $\frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \\ \\ \frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \\ \\ \frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } \times \frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} + \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \times \frac{\sqrt{4} + \sqrt{5} }{ \sqrt{4} + \sqrt{5} } \\ \\ \frac{ {( \sqrt{7}) }^{2} + 2 \sqrt{7} \times \sqrt{3} + {( \sqrt{3} )}^{2} }{ {( \sqrt{7}) }^{2} - {( \sqrt{3} )}^{2} } + \frac{ {( \sqrt{4}) }^{2} + 2 \sqrt{4} \times \sqrt{5} + {( \sqrt{3} )}^{2} }{ {( \sqrt{4}) }^{2} - {( \sqrt{5} )}^{2} } \\ \\ \frac{7 + 3 + 2 \sqrt{21} }{7 - 3} + \frac{4 + 3 + 4 \sqrt{5} }{4 - 5} \\ \\ \frac{10 + 2 \sqrt{21} }{4} + \frac{7 + 4 \sqrt{5} }{ - 1} \\ \\ \frac{10 + 2 \sqrt{21} }{4} - \frac{7 + 4 \sqrt{5} }{ 1} \\ \\ \frac{10+2 \sqrt{21} - 28 - 16 \sqrt{5} }{4} \\ \\ \frac{ - 18 + 2 \sqrt{21} - 16 \sqrt{5} } {4}$

40.

Simplify √7 + √3 / √7 - √3 + √4 + √5 / √4 -√5 plz give real ans.

Answer»

ong>GIVEN,

$\frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \\$

To FIND,

RATIONALIZE and Solve the Following

Solution,

$\frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \\ \\ \frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \\ \\ \frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} - \sqrt{3} } \times \frac{ \sqrt{7} + \sqrt{3} }{ \sqrt{7} + \sqrt{3} } + \frac{ \sqrt{4} + \sqrt{5} }{ \sqrt{4} - \sqrt{5} } \times \frac{\sqrt{4} + \sqrt{5} }{ \sqrt{4} + \sqrt{5} } \\ \\ \frac{ {( \sqrt{7}) }^{2} + 2 \sqrt{7} \times \sqrt{3} + {( \sqrt{3} )}^{2} }{ {( \sqrt{7}) }^{2} - {( \sqrt{3} )}^{2} } + \frac{ {( \sqrt{4}) }^{2} + 2 \sqrt{4} \times \sqrt{5} + {( \sqrt{3} )}^{2} }{ {( \sqrt{4}) }^{2} - {( \sqrt{5} )}^{2} } \\ \\ \frac{7 + 3 + 2 \sqrt{21} }{7 - 3} + \frac{4 + 3 + 4 \sqrt{5} }{4 - 5} \\ \\ \frac{10 + 2 \sqrt{21} }{4} + \frac{7 + 4 \sqrt{5} }{ - 1} \\ \\ \frac{10 + 2 \sqrt{21} }{4} - \frac{7 + 4 \sqrt{5} }{ 1} \\ \\ \frac{10+2 \sqrt{21} - 28 - 16 \sqrt{5} }{4} \\ \\ \frac{ - 18 + 2 \sqrt{21} - 16 \sqrt{5} } {4}$

Discussion

41.	What is coefficient in pq p²q²÷
Answer» ONG>Answer: 1 is the coefficient Step-by-step EXPLANATION:

41.

What is coefficient in pq p²q²÷

Answer» ONG>Answer:

1 is the coefficient

Step-by-step EXPLANATION:

Discussion

42.	What is the simplest form of 63 : 36(1 Point)7: 44 : 79 : 44 : 9
Answer» ONG>ANSWER: 7:4 Step-by-step explanation: Mark this answer as Brainlist

42.

What is the simplest form of 63 : 36(1 Point)7: 44 : 79 : 44 : 9

Answer» ONG>ANSWER:

7:4

Step-by-step explanation:

Mark this answer as Brainlist

Discussion

43.	How many solutions do the pair of equations, x=2 and x=-5 have?
Answer» ONG>Answer: Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical ENERGY NEEDED to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

43.

How many solutions do the pair of equations, x=2 and x=-5 have?

Answer» ONG>Answer:

Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical ENERGY NEEDED to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

Discussion

44.	CommonHow manycirclestangents can be drawnwhich touch internally ?
Answer» Touching externally- 3 Intersecting at two POINTS - 2 Touching INTERNALLY -1 One LYING inside other- 0

44.

CommonHow manycirclestangents can be drawnwhich touch internally ?

Answer»

Touching externally- 3

Intersecting at two POINTS - 2

Touching INTERNALLY -1

One LYING inside other- 0

Discussion

45.	The solution of 5x = 25 is _________
Answer» ONG>Answer: 5 Step-by-step EXPLANATION: solution- 5x = 25 5×x = 25 x = 25÷5 x = 5 prove - 5x = 25 x = 5 5×5 = 25 25 = 25 LHS = RHS hope it HELPS.

45.

The solution of 5x = 25 is _________

Answer» ONG>Answer:

5

Step-by-step EXPLANATION:

solution-

5x = 25

5×x = 25

x = 25÷5

x = 5

prove -

5x = 25

x = 5

5×5 = 25

25 = 25

LHS = RHS

hope it HELPS.

Discussion

46.	i am a rectangle my length is x and breadth is y units sum of my length and breadth is 36 the difference between my length and breadth is 6 units
Answer» ong>Step-by-step explanation: PLEASE MARK as brainliest

46.

i am a rectangle my length is x and breadth is y units sum of my length and breadth is 36 the difference between my length and breadth is 6 units

Answer»

ong>Step-by-step explanation:

PLEASE MARK as brainliest

Discussion

47.	Complete the sequence 10, 20,30, dash
Answer» ONG>Answer: 40,50,60,70,.... Step-by-step EXPLANATION:

47.

Complete the sequence 10, 20,30, dash

Answer» ONG>Answer:

40,50,60,70,....

Step-by-step EXPLANATION:

Discussion

48.	S 4. Quadrilateral PQRS is a rectangle. Two sectors with centres R and S aredrawn as shown in the figure. Find the area of shaded region. Given thatPQ = 21 cm and QR = 14 cm.Р
Answer» ong>ANSWER: answe Step-by-step explanation: MARK me as brainlist

48.

S 4. Quadrilateral PQRS is a rectangle. Two sectors with centres R and S aredrawn as shown in the figure. Find the area of shaded region. Given thatPQ = 21 cm and QR = 14 cm.Р

Answer»

ong>ANSWER:

answe

Step-by-step explanation:

MARK me as brainlist

Discussion

49.	Find the Area of rectangle and square
Answer» ong>Answer: area of RECTANGLE = length × breadth are of square = SIDE ×side hope it is useful

49.

Find the Area of rectangle and square

Answer»

ong>Answer:

area of RECTANGLE = length × breadth

are of square = SIDE ×side

hope it is useful

Discussion

50.	What trigonometric rations for acute angles in both the given figures . [ PLEASE GIVE ME ANS FOR 9TH CLASS MATHS ]
Answer» ONG>ANSWER: Of what do you WANT SIN,cos or TAN

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

*I Sin 30 cos 45 + sin 45' CS 30'find the value​

Does 5047/3500 have a terminating or non terminating decimal. If yes after how many places will it terminate?​

ब) पुढील उपप्रश्न सोडवा.i) जर 4x +2y= 8 आणि 2x +4y= 10 असेल तर x + y ची किंमत काढा.​

15 men can finish the work in 40 days. the number of days in which the piece of work can be done by 20 men. Note: Do it step by step.. ​

*p² / 4 + p / 3 + 1/9 is an expansion of which binomial?* 1️⃣ (p/2 + 1/3)²2️⃣ (p/2 - 1/3)²3️⃣ (p/4 + 1/9)²4️⃣ none of the above​

*Decide the orderly relationship between 5/4 & 11/12 .* 1️⃣ 5/4 > 11/122️⃣ 5/4 < 11/123️⃣ 5/4 = 11/12​

6) If side of a square is 10cm then diagonalof a square isO20O 10V 210205​

15) Hypolenuse of a right angled triangle is 1 less than twice its small side.Third side is 1 more than its small sidea) If the small side is what is the length of other two sides.b) Form an equation connecting the length of the sides.c) Calculate the length of the sides of the triangle.​

Write the equations for the statement “ The sum of numbers x and 4 is 9”.​

A upon b = 3 upon 4 3a upon 4b =​

3) બે રેખાઓ x + 2 + 7 = 0 અને 2x + my + 18 = 0 એકબીજીનેછેદતી નથી, તો પણ m નું મૂલ્ય 4 મળે છે.'​

Multiply (4xy+ 3x'y)(5xy -3x)​

ANSWER = >

7x²y(5Y — 3)

35x²y² — 21x²y

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*p² / 4 + p / 3 + 1/9 is an expansion of which binomial?*​

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Find the compound interest on ₹3125 for 3 years if the rates of interest for the first year, second year and third year are respectively 4%,5% and 6% per annum​

A:b=2:3 and c:b=5:6 then a:b:c=?

Describe the nature of roots of 9x2+7x - 2=0​

Let S = {1,2,3,...,12). How many functions f: S -> S are there such that f(f(x)) = x and f(x) – X is not divisibleby 3? ​

*एका पिशवीमध्ये 5 लालआणि 3 काळे चेंडू आहेत. तर काळा चेंडू काढण्याची संभाव्यता ……….. आहे* 1️⃣ 5/82️⃣ 1/23️⃣ 3/84️⃣ यापैकी नाही​

Simplify: 2/(x-3) - 3/(x+1)

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2.machines are oiled from thme to time​

Bank difficult question. ​

2tan 45º + cos45° - sin45º =0O2013​

How 23%can be written as decimal point ?​

Pls answer questions with full working all questiins​

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If two coins are tossed , find the probability of the event "getting at most one head."​

Q.4 ) Write the multiplication and division sentences,a) 10 groups of 7​

115' angle is an example of :​

*The distance between two parallel tangents of a circle of radius 4 cm is ………* 1️⃣ 2 cm2️⃣ 4 cm3️⃣ 6 cm4️⃣ 8 cm​

What is Photosynthesis ???•HLO GUYS....●●●​

C) When we write LA= LB, we actually mean​

• Contract costing useful in​

A circular garden of diameter 10units is surrounded by a pathway that is 2units wide. Assuming that the center of the garden is at the origin, give the equation that describe the bigger circle.

a 16m deep well with diameter 3.5m is dug up and the earth out of it is spread evenly to form a plateform 27.5m by 7m . Find the height of the platform.​

Solution :

As we KNOW that :

GIVEN that :

Also Given that :

Volume of plateform :

ATQ :

Hope it helps ☺

Fóllòw Më ❤

Simplify √7 + √3 / √7 - √3 + √4 + √5 / √4 -√5 plz give real ans.​

What is coefficient in pq p²q²÷​

What is the simplest form of 63 : 36(1 Point)7: 44 : 79 : 44 : 9​

Mark this answer as Brainlist

How many solutions do the pair of equations, x=2 and x=-5 have?​

CommonHow manycirclestangents can be drawnwhich touch internally ?​

The solution of 5x = 25 is _________​

5

x = 5

i am a rectangle my length is x and breadth is y units sum of my length and breadth is 36 the difference between my length and breadth is 6 units​

Complete the sequence 10, 20,30, dash​

S 4. Quadrilateral PQRS is a rectangle. Two sectors with centres R and S aredrawn as shown in the figure. Find the area of shaded region. Given thatPQ = 21 cm and QR = 14 cm.Р​

MARK me as brainlist

Find the Area of rectangle and square​

What trigonometric rations for acute angles in both the given figures . [ PLEASE GIVE ME ANS FOR 9TH CLASS MATHS ]​

*I Sin 30 cos 45 + sin 45' CS 30'find the value

Does 5047/3500 have a terminating or non terminating decimal. If yes after how many places will it terminate?

ब) पुढील उपप्रश्न सोडवा.i) जर 4x +2y= 8 आणि 2x +4y= 10 असेल तर x + y ची किंमत काढा.

15 men can finish the work in 40 days. the number of days in which the piece of work can be done by 20 men. Note: Do it step by step..

p² / 4 + p / 3 + 1/9 is an expansion of which binomial? 1️⃣ (p/2 + 1/3)²2️⃣ (p/2 - 1/3)²3️⃣ (p/4 + 1/9)²4️⃣ none of the above

Decide the orderly relationship between 5/4 & 11/12 . 1️⃣ 5/4 > 11/122️⃣ 5/4 < 11/123️⃣ 5/4 = 11/12

6) If side of a square is 10cm then diagonalof a square isO20O 10V 210205

15) Hypolenuse of a right angled triangle is 1 less than twice its small side.Third side is 1 more than its small sidea) If the small side is what is the length of other two sides.b) Form an equation connecting the length of the sides.c) Calculate the length of the sides of the triangle.

Write the equations for the statement “ The sum of numbers x and 4 is 9”.

A upon b = 3 upon 4 3a upon 4b =

3) બે રેખાઓ x + 2 + 7 = 0 અને 2x + my + 18 = 0 એકબીજીનેછેદતી નથી, તો પણ m નું મૂલ્ય 4 મળે છે.'

Multiply (4xy+ 3x'y)(5xy -3x)

A test tube has a diameter of 20mm and a height of 15cm.the lower portion is a hemisphere .find the capacity of the test tube .

Find the range of the following data: 55,36,95,73,60,42,25,78

p² / 4 + p / 3 + 1/9 is an expansion of which binomial?

Area of sector of circle is 0/360° ×nr^2true or false

Find the compound interest on ₹3125 for 3 years if the rates of interest for the first year, second year and third year are respectively 4%,5% and 6% per annum

Describe the nature of roots of 9x2+7x - 2=0

Let S = {1,2,3,...,12). How many functions f: S -> S are there such that f(f(x)) = x and f(x) – X is not divisibleby 3?

एका पिशवीमध्ये 5 लालआणि 3 काळे चेंडू आहेत. तर काळा चेंडू काढण्याची संभाव्यता ……….. आहे 1️⃣ 5/82️⃣ 1/23️⃣ 3/84️⃣ यापैकी नाही

Core: 2) 2. The sides of a rectangle are in the ratio 2:3a) If the breadth is 2a, what is the length?b) If the perimeter of the rectangle is 40cm, find the length and breadth?

2.machines are oiled from thme to time

Bank difficult question.

2tan 45º + cos45° - sin45º =0O2013

How 23%can be written as decimal point ?

Pls answer questions with full working all questiins

Prove factor or does not factorExample:1) p(1)=0. (x-1) is a factor

If two coins are tossed , find the probability of the event "getting at most one head."

Q.4 ) Write the multiplication and division sentences,a) 10 groups of 7

115' angle is an example of :

The distance between two parallel tangents of a circle of radius 4 cm is ……… 1️⃣ 2 cm2️⃣ 4 cm3️⃣ 6 cm4️⃣ 8 cm

What is Photosynthesis ???•HLO GUYS....●●●

C) When we write LA= LB, we actually mean

• Contract costing useful in

a 16m deep well with diameter 3.5m is dug up and the earth out of it is spread evenly to form a plateform 27.5m by 7m . Find the height of the platform.

Simplify √7 + √3 / √7 - √3 + √4 + √5 / √4 -√5 plz give real ans.

What is coefficient in pq p²q²÷

What is the simplest form of 63 : 36(1 Point)7: 44 : 79 : 44 : 9

How many solutions do the pair of equations, x=2 and x=-5 have?

CommonHow manycirclestangents can be drawnwhich touch internally ?

The solution of 5x = 25 is _________

i am a rectangle my length is x and breadth is y units sum of my length and breadth is 36 the difference between my length and breadth is 6 units

Complete the sequence 10, 20,30, dash

S 4. Quadrilateral PQRS is a rectangle. Two sectors with centres R and S aredrawn as shown in the figure. Find the area of shaded region. Given thatPQ = 21 cm and QR = 14 cm.Р

Find the Area of rectangle and square

What trigonometric rations for acute angles in both the given figures . [ PLEASE GIVE ME ANS FOR 9TH CLASS MATHS ]