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Anestetic [448]
3 years ago
9

The variable z is directly proportional to x. When x is 15, z has the value 165. What is the value of z when x = 25?

Mathematics
2 answers:
ANTONII [103]3 years ago
7 0

Answer:

z=275

Step-by-step explanation:

it has a ratio 1:11

that must be it

lisov135 [29]3 years ago
5 0

Answer:

275

Step-by-step explanation:

z is directly proportional to x:

z = kx

When x is 15, z is 165.

165 = k × 15

k = 11

When x = 25:

z = 11 × 25

z = 275

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