f varies inversely as the square of d when d=5 and f= 18 find
a) f when d= 10
b) d when f=50
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Answer:
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Step-by-step explanation:
Write it as an inverse variation first.
F
∝
1
d
2
multiply by k
F
=
k
d
2
find the value of k
k
=
F
×
d
2
⇒
50
×
10
2
=
5000
F
=
5000
d
2
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