Question

A is inversely proportional to square of

b.If a=9 then b=sqrt of 3.Find b when a=3

Answer 1

I didn't understand the question ask it is the proper way u may get the answer

Answer 2

The value of b when a=3 is $\pm 3$

Step-by-step explanation:

We are given that A is inversely proportional to square of  b .

So, $A \propto \frac{1}{b^2}$

$A=k \times \frac{1}{b^2}$ ---- A

a=9 and b = √3

Substitute the values in the A

$9 = k \times \frac{1}{(\sqrt{3})^2}$

27=k

Substitute the value of k and a = 3

$3=27 \times \frac{1}{b^2}$

$b^2=27 \times \frac{1}{3}$

$b^2=9$

$b=\sqrt{9}$

$b=\pm 3$

Hence The value of b when a=3 is $\pm 3$

#Learn more:

Y is proportional to the square root of x.

When x = 16, y = 10.

(a) Find an equation connecting x and y

(b) Find the value of x when y = 1.

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