165k views
1 vote
Y



x
If
y
=
45
when
x
=
81
find,
x
when
y
=
100

User Zigojacko
by
8.7k points

1 Answer

4 votes

9514 1404 393

Answer:

400

Explanation:

The statement of proportionality means the ratio of y to √x is the same. Then we can write ...

(√x)/100 = (√81)/45

√x = 100(√81)/45 = 20 . . . . . multiply by 100

x = 20² = 400

x is 400 when y is 100.

User CoronA
by
8.2k points

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