R is inversely proportional to A
R = 12 when A = 1.5
a) Work out the value of R when A = 5.
b) Work out the value of A when R = 9

Part a: The value of R when is

Part b: The value of A when is

Explanation:

It is given that R is inversely proportional to A.

Hence, it can be written as

Also, it is given that and

Substituting these values in , we have,

Thus, the value of K is

Part a: To determine the value of R when

Now, substituting and in , we get,

Thus, the value of R is

Part b: To determine the value of A when

Now, substituting and in , we get,

Thus, the value of A is

answer is c

step-by-step explanation:

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step-by-step explanation: