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21-10-2019
Mathematics

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4) Suppose y varies directly with x, and y = 7 when x = 2. Find y when x = 21.

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roy42069 roy42069

21-10-2019

Answer:

73.5

Step-by-step explanation:

y=kx

where k is a constant

y=7

x=2

7=2k

k=3.5

what about when x=21

y=3.5*21

y=73.5

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