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6 votes
F

is inversely proportional to

g
.
When
f
=
15
,
g
=
144

Work out
g
when
f
=
90

User Quack
by
8.7k points

1 Answer

2 votes

Answer:

4

Explanation:

The proportional relationship can be described by the equation ...


f=(k)/(√(g))

We can fill in the given values to find k:

15 = k/√144 = k/12

15·12 = k = 180 . . . . . . multiply by 12

Then for f = 90, we have ...

90 = 180/√g

1/2 = 1/√g . . . divide by 180; next multiply by 2√g and square both sides

g == 4 . . . . the value of g when f=90

User Samivic
by
8.6k points

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