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v varies directly as x and inversely as y if z = 15 when x = 4 and y = 8 find the value of k.
a10
d20
c30
d40 ​

Sagot :

Macadaegjennelyngo

Answer:

c. 30

Step-by-step explanation:

[tex]v = \frac{kx}{y} [/tex]

[tex]15 = \frac{4k}{8} [/tex]

15(8) = 4k

120 = 4k

30 = k

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