y varies inversely as x. y = 18 when x = 7. Find y when x = 3.y=(Simplify your answer.)

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25-10-2022
Mathematics

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y varies inversely as x. y = 18 when x = 7. Find y when x = 3.y=(Simplify your answer.)

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TitusG723898 TitusG723898 · Answer 1 · 2022-10-25T15:35:59+02:00

TitusG723898 TitusG723898

25-10-2022

[tex]\begin{gathered} y=\frac{k}{x} \\ \text{when y = 18, x = 7} \\ k\text{ = xy = 18}\times7\text{ = 126} \\ \text{Also, using} \\ y=\frac{k}{x} \\ y\text{ =}\frac{126}{3}\text{ = 42} \end{gathered}[/tex]

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