mullise mullise

13-10-2021
Mathematics

contestada

Suppose that y varies directly with x and y = = 10 when x = 20. What is y when x = 15?

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Veritas78 Veritas78

18-10-2021

Y=kx

10=k 20

Divide both sides by 20

k=1 ÷2 or 0.5

To find y when x=15

y=kx

y=0.5 ×15

Therefore y=7.5

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