If y varies inversely as x and y=3 when x=8 what is x when y=4

Mathematics

1 answer:

I am Lyosha [343]2 years ago

5 0

Answer:

x = 6

Step-by-step explanation:

y varies inversely as x

y = k × 1/x. {where k is a constant}

when y = 3, x = 8

Therefore 3 = k/8 and k is 24

y = 24/x

When y = 4,

4 = 24/x

4x = 24

(dividing both sides by 4)

x = 6

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