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The variable Z is directly proportional to X. When X is 5, Z has the value 55. What is the value of Z when X = 12

The variable Z is directly proportional to X. When X is 5, Z has the value 55. What is the value of Z when X = 12
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2 votes
The variable Z is directly proportional to X. When X is 5, Z has the value 55.

What is the value of Z when X = 12

asked
User Smyslov
by
8.2k points

1 Answer

1 vote
z = k * x
55 = k * 5
divide both sides by 5
11 = x

z = 11x

z = 11 * 12
z = 132
answered
User Sturla Molden
by
8.0k points
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