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
Pleasee guys

a) R = 3.6

b) A = 2

Step-by-step explanation:

Given that R is inversely to A (R ∝ 1/A) so the formula is R = k/A where k is a constant. So you have to find the value of k first by substituing R and A into the formula :

We have already found the value of k. Next we only have to substitute the following values to find the value of other variable :

answer: the first graph

step-by-step explanation:

40 minutes

step-by-step explanation:

add the time and multiply by 2