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suppose y varies jointly with x and z. when z=14 and x=3.5 y =306.25?
What is the value of z when x=13 and y=731.25
1).9
2).13
3).14
4).19
Explain please
1 Answer
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- Randy PLv 77 years agoFavorite Answer
"Suppose y varies jointly with x and z."
Then that means y = kxz where k is some constant.
"when z=14 and x=3.5 y =306.25"
Then that means that 306.25 = k * 3.5 * 14.
You can solve that for k.
"What is the value of z when x=13 and y=731.25"
You have y = kxz. Plug in y, plug in x, plug in k. Solve for z.
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