Question

If y varies jointly with x and z, what is k when y = 30, x = 4 and z = 5?
Answer
a. 21
b. 3/2
c. 2/3
d. 24

Answer 1

k?

Answer 2

yea

Answer 3

find an eq in terms of y

Answer 4

which is??

Answer 5

\[y=kxz\]
\[y=k*4*5\]
\[y=20k\]
\[30=20k\]
\[k=3/2\]