Answer:
look at the angles. they all ad up to 180 degrees devide that by 9, and there you go!
Step-by-step explanation:
Solve the system using substitutions:

x has a value of 1. Use this value to find the value of y.

y has a value of 1.
x=1
y=1
Answer:
12
Step-by-step explanation:
43
Answer:
40%
Step-by-step explanation:
because convert the fraction 16/40 and the answer is 40%
._.
X^-2=4. You got it correct:)