Isolate z by itself:

To simplify variables with powers, subtract the smaller power from the bigger power:


The exponent will be
-3.
Answer:
idk this stuff yet
Step-by-step explanation:
Step-by-step explanation:
do you have a calculator that could count these? with it it would be easy.
anyway here are the first ones and thanks for the one star
Answer:
(x,y)=(-22/49,-5566/147)
Step-by-step explanation:
$5 because %15 of $70 is 10 and %5 of $10 is 5