Question

Please help!! Maths question I don't understand!

Answer 1

see explanation

Explanation:

The statements tells us that w is inversely proportional to v and the equation relating them is

v =
`(k)/(w)` ← k is the constant of proportion

To find k use the condition v = 9, w = 5, that is

9 =
`(k)/(5)` ( multiply both sides by 5 )

45 = k

v =
`(45)/(w)` ← equation of proportion

When w = 4 , then

v =
`(45)/(4)` = 11.25