3 years ago

The variable Z is directly proportional to X. When X is 10, Z has the value 190.

1 answer:

irina [24]3 years ago

7 0

Since z is proportion to the x
z = a x
190 = a 10
a = 19

when x = 13
z = a x
z = 19 * 13
z = 247

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