Answer:
-3.06
Step-by-step explanation:
3-6=-3
-3/5=-0.6
Answer:
y = 5/2x -15
Step-by-step explanation:
5x - 2y = 30
-2y = -5x + 30
y =
x -15
5.7t < 420 divide both sides by 5.7
5.7 5.7
t < 73.68
Answer:
19) (
)^2 = 
20) -
= -81
21)
= 16
Step-by-step explanation:
The only wrong ones are
19) (
)^2 = 
20) -
= -81 ... negative is not inside a parenthesis that's why it is still negative
21) you can add another way is
= 16
Everything else looks good. Great job!