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December 20, 2014

December 20, 2014

Posted by **Anonymous** on Monday, February 6, 2012 at 8:08am.

1. a is directly proportional to b. If a = 15, then b = 9

2. M varies directly as n. If n = 2/3, then m = 1/4

3. T varies as the square root of L. If L = 81, then T = 10

4. Z is proportional to the cube of d. If d = 2 then z = 5

5. f varies directly as the square of t. If t = 16, then r = 6

6. p varies directly as the sum of L and W. If L = 4 and W = 3, then P = 14

7. C is directly proportional to r. If r = 5, then c = 10(pi)

8. Y varies directly as the cube root of x. If x = 27, then y = 2z

9. J varies directly as E. If J = 594, then E = 225.

10. X varies as 1/y. If X = 25, y = 10

- math -
**Reiny**, Monday, February 6, 2012 at 9:27amWow , looks like you want us to do your assignment for you.

I will do one of them, say #8, then you do the rest

#8

Y varies directly as the cube root of x

y = k (x)^(1/3)

given : when x=27, y = 2z

2z = k(27)^(1/3)

2z = k(3)

k = 2z/3

(was this a typo? all the other cases had numbers)

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