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  • 10-11-2020
  • Mathematics
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Please help i'm taking a test, and when you get the answer please explain how you got it!!

Please help im taking a test and when you get the answer please explain how you got it class=

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CLJL CLJL
  • 10-11-2020

Answer:

y = 122.57

Explanation:

y = 143 when x = 49

Y varies directly with x, so the equation is --> y = kx (k would be the constant of variation).

k = y/x = 143/49

y = (143/49) x

When x = 42 --> y = (143/49) · 42 --> y = 2.92 · 42 --> y = 122.57

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