OpenStudy (anonymous):

y varies jointly as x and z. Write the appropriate joint-variation equation, and find y for the given values of x and z. y = 120 when x = 8 and z = 20; x = 54 and z = 7 a. ; 283.5 c. ; 283.5 b. ; 201.07 d. ; 198.3

4 years ago
OpenStudy (amistre64):

y = kxz

4 years ago
OpenStudy (amistre64):

therefore:\[y' = \frac{y}{xz}(x'z')\]

4 years ago