Question

please answer fast.......

Answer 1

Step-by-step explanation:

Formula for inverse proportion - m1×n1=m2×n2

45×2=10×x

90/10=x

x=9

45×2=x×3

90/3=x

x=20

Answer 2

For a given mass of gas

V varies inversely as P

Mathematically,

V ℅ 1/P

introducing the constant

V = K/P

K = V × P .... formula for the constant

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For the first column , use the value for V and P to find the constant K

V = 45

P = 2

K = V × P

K = 45 × 2

K = 90

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For the second column ,

V = 10

P = ?

K = 90

K = V × P

90 = 10 × P

P = 90/10

P = 9

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For the third column

V = ?

P = 3

K = 90

K = V × P

90 = V × 3

V = 90/3

V = 30

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