genloufieldd genloufieldd

25-04-2020
Mathematics

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Suppose that y varies directly with x, and y=4 when x=20. find y when x=9

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valleybritney valleybritney

25-04-2020

Answer:

y = 1.8

Step-by-step explanation:

y=kx

4=k(20)

k=[tex]\frac{1}{5}[/tex]

When x = 9:

[tex]y=\frac{1}{5} x=\frac{1}{5} (9)\\y=(\frac{9}{5}) = 1.8[/tex]

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