jahlynrichard jahlynrichard

17-11-2020
Mathematics

contestada

The value of y is directly proportional to the value of x. If y = 45 when x = 180, what is the value of y when x=90

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topeadeniran2 topeadeniran2

25-11-2020

Answer: 22.5

Step-by-step explanation:

The formula for.direct proportion will be:.

y = kx

Since y = 45, x = 180

45 = 180k

k = 45/180

k = 1/4 = 0.25

When x = 90

Since y = kx

y = 0.25 × 90

y = 22.5

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