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let 1/x = a and 1/y = bso Equation will be,a + b = 12 ......(1)3a - 2b = 1 ......(2)Eliminating b by 2×(1) + (2)2a + 2b = 243a - 2b = 1

5a = 25a = 5so, b = 12 - a = 12-5 = 7so x = 1/5 and y = 1/7

Explanation : 3a + 5b = 26 a + 5b = 22 3a + 5b - a - 5b = 26 - 22 2a = 4 a = 2 6 + 5b = 26 5b = 20 b = 4

Solution : a = 2 , b = 4

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tan45=x/4-x1=x/4-x4-x=x2x=4x=2area=1/2(b)(h) =1/2(4)(x) =1/2(4*2) =1/2*8 =4 sq cm

4 + 4.44 + 44.4 + 4.04 + 444

= 448 + 8.48 + 44.4

= 448 + 52.88

= 500.88

(C) is correct option

6 a -10b I think that it is if it is not I am sorry

(3a+5b)(3a_5b(3a+3a)(5b_5b)6a_b

nice

3a + 5b = 26......(1)a + 5b = 22........(2)

Subtract eq(2) from eq(1), we get

2a = 4a = 4/2 = 2

Put value of a = 2 in eq(1)3*2 + 5b = 265b = 26 - 65b = 20b = 20/5 = 4

Value of a = 2, b = 4

x + 7 -8x/3 = 17/6 - 5x/2

7 - 17/6 = 8x/3 - 5x/2 - x

(42-17)/6 = (16x - 15x)/6 - x

25/6 = x/6 - x

25/6 = (x - 6x)/6

25/6 = -5x/6

x = -5

3a+5b-a-5b=26-22=42a=4a=26+5b=26 5b=26-6=20b=4

Explanation : 3a + 5b = 26 a + 5b = 22 3a + 5b - a - 5b = 26 - 22 2a = 4 a = 2 6 + 5b = 26 5b = 20 b = 4

Solution : a = 2 , b = 4

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So(+15)-(-17)= 15+17= 32thanks

+15-(-17)=15+17=32 is the answer

32 is th best answer

15 + 17 (- *- =+)=32

Know, =(+15)-(-17)=(+15)+17=32

given ,15-(-17)=15+17=32

49 was the right answer

So A= 3B= 4as 73-47= 26

The value of A is 3 and B is 4

A=3B=4THEN 73-74=26

73- 4726 is the best answer

a=3b=4

26 is the right answer

49 is right answer of this question

73-47=26so A=3 and B=4

59 is correct answer

probability (getting a tail)=1/4

Here, each shelf should have the same number of novel and autobiography. So, it should be the common divisors of 24 and 16. but the greatest would be the GCD of the numbersthe GCD is 8The greatest number of shelves is 8.

So he can have, 3 novels and 2 autobiographies in each shelf.

Find the prime factors for each number as:

8=2×2×236=2×2×3×3

Now identify the common factors and determine the HCF:

8=2×2×236=2×2×3×3

Therefore:HCF=2×2=4

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lcm *hcf = product of the numbers

180*hcf = 36*45

hcf = 1620/180

Hcf = 9

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thanks frn where are you from

(a+b)^3 =a^3 +b^3 +3ab (a+b)(a-b)^3 =a^3 -b^3 -3ab (a-b)(5a+3b)^3 =125 a^3 +27 b^3 +15ab (5a+3b)=125 a^3 +27 b^3 +75a^2 b+45a b^2........ (1)(5a-3b)^3 =125 a^3 -27 b^3 -15ab (5a-3b)=125 a^3 -27 b^3-75a^2 b+45ab^2......... (2)subtracting 2 from 1(5a+3b)^3 -(5a-3b)^3=54b^3+150a^2 b

999 coins because he need 1 more coin then he will have 1000 coins

When two coins are tossed the probabilities are HH,HT,TH,TT

So, the chance is 1/4

Sample space,S= {HH,HT,TH,TT}n(S)=4

Event A: at least one tail turns up.A={HT,TH,TT}n(A)=3P(A)=n(A)/n(S) =3/4Event B:

Event B: no heads turn upB={TT}n(B)=1P(B)=n(B)/n(S) =1/4Event C: at the most one tail turns up.C={HH,HT,TH}n(C)=3P(C)= n(C)/n(P) = 3/4I hope it's help you and sorry for half answer

1)the amount left with Mahesh=30-15=Rs152)marbles with amith=15+5=203)the amount left with rehaman=50-28=rs22

( 7/3 + 3/4) + (-3/5)

(28+ 9)/12 - 3/5

37/12 - 3/5

(185 - 36)/60

149/60

Given:Per month earning = Rs.40,000

3/8 = foodSo 3/8 x 40,000 = Rs 15,000

Remaining = 40,000 - 15,000 = Rs 25,000

1/5 = LIC Premium So 1/5 x 25,000 = Rs 5,000

Remaining = 25,000 - 5,000 = Rs 20,000

1/2 on remaining expenses1/2 x 20,000 = Rs10,000

Total amount remaining with him is Rs 20,000 - 10,000 = Rs 10,000

6 is the correct answer

It will make a new cube whose new side is 64

Total surface area = 6a2

= 6 *64*64

= 24576 cm²

this question answer is 96 sq. cm

Just take out the square of 216

just take out the cube root of 216.. so 6 soaps will occur in first line of cube..