8. solve the following equation z- 4 = -8 a. z = -2 b. z = 32 c. z = -4 d. z = -12 9. solve the following equation -3 = x/5 a. y = 1.4 b. y = 1/2 c. y = 2.8 d. y = 0.6 10. solve the following equation a. x = -9/4 b. x = -15 c. x = -3/5 d. x = 15

You are solving for the variable. Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS:

8) z- 4 = -8

Isolate the z. Add 4 to each side

z - 4 (+4) = -8 (+4)

z = -8 + 4

z = -4

C. z = -4 is your answer

9) -3 = x/5

Note the equal sign. What you do to one side, you do to the other. Isolate the x. Multiply 5 to both sides

-3(5) = x/5(5)

x = -3(5)

x = - 15

B. x = - 15 is your answer

hope this helps

i belive those are the ones that are under 90 degreese.

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation: