Question

if p varies jointly as the square of the product of u and v anf p=-60 when u=3 and v=5. Find u when p=-15 and v=21

Answer 1

Answer:

y=kx y = k/

12. Duk

5. If p varies inversely as the square root of q, and p = 12 when g=36, find p when q = 18. робок.

4:2

k = 2

6. Suppose that w varies directly as z² and inversely as xy, and that w 10 when x = 15, y=2, and z=5. Find z when w=2.x = 8, and y = 27. 10-5 K 3,0 10= 25

xy

(5(2)

30

2 2=2² 8(27)

k= 12

2 = 20.785

7. If w varies jointly as u and v, and w=24 when u = 0.8 and v5. find u when w = 18 and v= 2

W: Kuv

24 = 8(5)K

24-4k 44 K=6

6

k=

= 1.5

12

8. If y varies directly as √x, and y= 24 when x = 9, find x when y = 96 Y =

3

96=√x8

12 = -√²

x=144