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cos(40 - A) = sin[ 90 - (40 - A)] = sin(50 + A)

cos(40 - A) - sin (50 +A)= sin(50 + A) - sin (50 + A) = 0

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Sum of 2/7 and 3/11=22+21/77=43/77product of 1/7and -43/2=-43/14divide 43/77÷(-43/14)=43/77*14/(-43)=-2/11

The regions whicharerichinreserves of Natural Gas Resourcesare: (a) Russia, U.K.andNorway in Europe. (b) Jaisalmer, Krishna-Godavari basinandDigboiRegionin India.

suppose CP for A=x so CP for B=1.2x so CP for C=(1.25)(1.2)x so (1.25)(1.2)x=1500 so x=1000 A pays 1000 for it.

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The CP is 125 for C, when CP for B is 100.So, CP is 1500 for C, when CP for B = 100*1500/125 = Rs 1200

SimilarlyThe CP is 120 for B, when CP for A is 100.So, CP is 1200 for B, when CP for A = 100*1200/12 = Rs 1000

Therefore CP for A = Rs 1000.

Galat hai

So from 10 persons, one is chair person and the other is a secretary, and they both have to be included in the committee. Thus now we have to select remaining 4 members from the other 8 persons.

therefore, 8C4 =>

sorry your answer is wrong

Technology has used affected sports of the sports includes cricket cricket is now the most popular sports in our country it is very much affected by technology as the newly introduced the DRS system is helping players to challenge the decision of the umpire as even the umpire sometimes make wrong decision the task of the umpire has also been very easy due to the introduction of new systems likes sneco or hotspot

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(2)^6×-1/6×(6)^3×-1/3×(3)^4×1/4]/ [(8)^3×-1/3×(2)^4×1/4×(3)^2×-1/2]

=[1/2×1/6×3] / [1/4×2×1/3]=[1/4]/[1/12]=12/4=3Please like the solution 👍 ✔️

This is the answer

For some cuboids to become a cube, all the dimensions should be equal in such a way that every original dimension is multiplied by an integral value to make it equal to other values. LCM of 5,2,5 is 10. So, we have to make every dimension equal to 10cm. cuboids required = (10*10*10)/(5*2*5)= 2*5*2= 20.

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log2X + log2Y ≥ 6

=> log2(XY)≥6

=> XY ≥ 64

1 cm ------> 5m6 cm² -------> 25× 6 m² = 150 m²

1cm=5m6cm²=5×6cm²=30cm²=30×30=900m

First option is The right answer

Fifth root of 13 is correct answer

cube of 8000=8000x8000x8000=512000000000cube of 175616=541616944814

Let us assume, the x is the tenth place digit and y is the unit place digit of the two-digit number. Also assume x > y

Therefore, the two-digit number is 10x + y and reversed number is 10y + xGiven:

x - y = 3 ---------------1

Also given:

10x + y + 10y + x = 14311x + 11y = 143x + y = 13 ---------------2

Adding equation 1 and equation 2

2x = 16x = 8

Therefore, y = x - 3 = 8 - 3 = 5

Therefore, the two-digit number = 10x + y = 10 * 8 + 5 = 85

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38220 = 196 x 195 + 0

H.C.F = 196

(i) 135 and 225 Since 225 > 135, हमने यह अप्लाई कियाwe apply the division lemma to 225 and 135 to obtain प्राप्त करने के लिए225 = 135 × 1 + 90 क्योंकि हमें ज्ञात है कि 90 ,0 के बराबर नहीं हैSince remainder 90 ≠ 0, we apply the division lemma to 135 and 90 to obtain 135 = 90 × 1 + 45 We consider the new divisor 90 and new remainder 45, and apply the division lemma to obtain 90 = 2 × 45 + 0 Since the remainder is zero, the process stops. Since the divisor at this stage is 45, Therefore, the HCF of 135 and 225 is 45.

Total time = 11/4+4/3 hours

2(3/4) + 1(1/3) = 11/4 + 4/3 = 11(3) + 4(4)/12 = 33 + 16/12 = 49/ 12 hours

Let’s say x is the unit digit and y is the tenth digit.

y+x = 9 -> y=9-x

10x+y = 10y+x+27

10x+9-x = 10(9-x)+x+27

10x+9-x = 90–10x+x+27

18x = 108

x = 6

so y = 3

let’s check

63 - 39 =27

27 = 27 (correct)

sorry your is not right

1g = 0.001kg=> 8g = 0.008kg

8/1000 kilograms hoga kyoki 1kilogram =1000gram to 8gramKa 8/1000kilogram

divide krne pr 0.008

kindly provide figure also

v=4/3πr³d=2rd=(6×v/π)⅓ thereforediameter=(6×100/π)⅓=5.7(approx)

we know that sum of complementary angles = 90

let one angle which is greater = x other angle = 90 - xA/Q

x - (90-x) = 13.50x - 90 + x = 13.502x = 13.50 +90x = 103.50x = 51.75

hence one angle = x= 51.75other angle = 90 - x = 90 - 51.75 = 38.25

Twice as old as Jyotihence2*18=36years

18 year double for her brothers 36

Let present age of B be X year's.

Present age of A = 4 × Present age of B = 4X year's.

Before 10 year's age of A = Present age of A - 10 = ( 4X - 10) year's.

Before 10 year's age of B = Present age of B - 10 = ( X - 10 ) year's .

According to question,

Before 10 year's age of A = 10 ( Before 10 year's age of B ).

4X - 10 = 10 ( X - 10)

4X - 10 = 10X - 100

10X - 4X = -10 + 100

6X = 90

X = 90/6

X = 15 year's.

Present age of B = X = 15 year's.

Let B be x years old.

.

Now:

B = x

A = 4x

.

Ten years ago,:

B = x - 10

A = 4x - 10

.

Ten years ago, A was 10 times as old as B:

4x - 10 = 10 (x - 10)

.

Solve x:

4x - 10 = 10 (x - 10)

4x - 10 = 10x - 100

10x - 4x = 100 - 10

6x = 90

x = 15

.

Find their present age:

B = x = 15

A = 4x = 4(15) = 60

.

Answer: B is 15 years old.

present age of B = 15 years old

Let present age of B be 'x' yrspresent age of A is 4x yrsTen years agoA's age= 4x-10B's age= x-10According to question4x-10=10(x-10)4x-10=10x-10010x-4x=100-106x=90x=90/6x=15therefore age of B=15 years

age of the B= 15 yrs is the correct answer of the given question



1

Secondary School

Math

5 points

A is four times as old as B. Ten years ago, A was 10 time as old as B. find the present age of B

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byAyanhusain04.08.2018

Answers



Panzer786

Genius

Heya !!

Let present age of B be X year's.

Present age of A = 4 × Present age of B = 4X year's.

Before 10 year's age of A = Present age of A - 10 = ( 4X - 10) year's.

Before 10 year's age of B = Present age of B - 10 = ( X - 10 ) year's .

According to question,

Before 10 year's age of A = 10 ( Before 10 year's age of B ).

4X - 10 = 10 ( X - 10)

4X - 10 = 10X - 100

10X - 4X = -10 + 100

6X = 90

X = 90/6

X = 15 year's.

Present age of B = X = 15 year's.

present age of B=15 years answer.

2

hello friend hcf meaning is highest common fractions the smallest prime number is 2 and the smallest composite number is 4 so the hcf will be 2

thx

4 is composite num and 2 is prime num