The Vertical Angles Theorem states that if two angles are vertical angles, then they are congruent .Given <A and <B are vertical angles so they are equal.
<A=<B.
Measure of <A=x and <B=5x-80
Or 5x-80=x
Adding 80 both sides
5x-80+80=x+80
5x=x+80
Subtracting x both sides
5x-x=x-x+80
4x=80
Dividing both sides by 4
x=20
Measure of <A= x= 20 degrees.
Answer:

Step-by-step explanation:
Use the inverse cosine function.



Answer:
576 cubic feet of dirt
Step-by-step explanation:
l x w x h
8 x 12 x 6 = 576
Answer:
(0,0) means that he didn't buy any apples so it doesn't cost anything
Step-by-step explanation: