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3 years ago

The variable Z is directly proportional to X. When X is 5, Z has the value 55.

2 answers:

8 0

Z is directly proportional to x, that means :
z = k.x, with k is the coefficient of proportionality:
Let calculate k:
When x = 5, z = 55. Plug in:
55 = k.5 → k=55/5 ; k =11
The value of z when = 12 is : z= kx; z = 11(12) and z = 132

NISA [10]3 years ago

7 0

Direct variation is of the form y=kx, in this case:

z=kx, we are given the point (5,55) so we can solve for the constant of variation

55=5k divide both sides by 5

11=k so our equation is:

z=11x, so when x=12

z=11(12)

z=132

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Step-by-step explanation:

We have been given that the number of employed persons equals 180 million. The number of unemployed persons equals 15 million, and the number of persons over age 16 in the population equals 210 million. We are asked to find the unemployment rate and the labor force participation rate.

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4 years ago

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Step-by-step explanation:

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3 years ago

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