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tiny-mole [99]
3 years ago
9

If y varies inversely as X and Y equals 5 when x equals 3 find X when Y is 15​

Mathematics
1 answer:
omeli [17]3 years ago
5 0

Answer:

x = 1

Step-by-step explanation:

Given that y varies inversely as x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition y = 5 when x = 3

k = yx = 5 × 3 = 15, thus

y = \frac{15}{x} ← equation of variation

When y = 15 then

15 = \frac{15}{x} ( multiply both sides by x )

15x = 15 ( divide both sides by 15 )

x = 1

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