Question

F

is inversely proportional to
√
g
.
When
f
=
15
,
g
=
169

Work out
f
when
g
=
225

Answer 1

Hope the attached helps!

Explanation:

Answer 2

f = 13

Explanation:

Given f is inversely proportional to
`√(g)` then the equation relating them is

f =
`(k)/(√(g) )` ← k is the constant of proportion

To find k use the condition when f = 15, g = 169 , then

15 =
`(k)/(√(169) )` =
`(k)/(13)` ( multiply both sides by 13 )

195 = k

f =
`(195)/(√(g) )` ← equation of proportion

When g = 225 , then

f =
`(195)/(√(225) )` =
`(195)/(15)` = 13