B. Solve For The Value Of The Constant Of Variation K, Then Find The Missing Value. Show Your Soluti

B. Solve for the value of the constant of variation k, then find the missing value. Show your solution below. (3 points each) 1.) z varies jointly as x and y, and z=60 when x=5 and y=6. Find x when z=72 and y=4. Solution:

2.) z varies jointly as x and y. If z=3 when x=3 and y=15, find z when x= 6 and y=9. Solution:

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Answer:

1. z varies jointly as x and y and z = 60 when x = 5 and y = 6.

a. Find z when x = 7 and y = 6

b. Find x when z= 72 and y = 4

c. Find y when z= 80 and x = 4

2. If r varies directly as s and inversely as the square of u, and r = 2 when s = 18 and u = 3, find ;

a. r when u = 3 and s= 27

b. s when u = 2 and r = 4

c. u when r = 1 and s = 36