The answer is D. All you have to do is add all of the angles for each choice you're given. It has to add up to exactly 180, because every triangle is 180 degrees.
You know a1.
So find a2, a3, and so on until a7.
a(1) = 12
a(2) = 16
a(3) = 20
a(4) = 24
a(5) = 28
a(6) = 32
a(7) = 36
Each is 4 more than the previous.
Answer:
The answer is 6
6(5)/8-3=
30/5=
=6
Step-by-step explanation:
Answer:
1.6 OR 8/5
(They are the same thing.)