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SOVA2 [1]
2 years ago
7

The value of y varies directly with x and inversely with

Mathematics
1 answer:
Pani-rosa [81]2 years ago
3 0

Answer:

x = 45 when y = 20 and z = 6

Step-by-step explanation:

The general formula here is y = kx/z²

If x = 24 and y = 6, z = 8, so:

y = kx/z² becomes 6 = k(24)/8², and:

             6                   1

k = ---------------- = -------------- = 16

         24/64            4/64

Then y = 16x/z², and so, if y = 20 and z = 6 (check this!), then:

20 = 16x/36, or 16x = 720, or x = 45

x = 45 when y = 20 and z = 6

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Is (-4,4) the solution of the system. 4x+5y>-6 and -2x+7y>20
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Step-by-step explanation:

You can check to see if the given point is in the solution set:

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2 years ago
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Yuliya22 [10]

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3 years ago
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