1. z varies jointly as x and y and z = 48 when x = 6 and y = 8.
2 q varies directly as r and inversely as u,and q=8 when r=32 and u=4​


Sagot :

Answer:

1. z varies jointly as x and y and z = 48 when x = 6 and y = 8.

z= kxy

48=k(6)(8)

48=k48

k=48/48

k=1

2 q varies directly as r and inversely as u,and q=8 when r=32 and u=4

q=kr/u

8=k(32)/4

k32=(8)(4)

k=32/32

k=1