Answer:
1. (+1)(+2)
2. (−2)(+3)
3. (−2)(+1)
Step-by-step explanation:
Your answer is 9.
Since you have
2(2)^2 you get 2(4) which is 8.
Then you have -3(2) which is -6.
Lastly you have the 7.
When you add it up you get.
9
Angle a = 60
given that all angles of a triangle added together must equal 180
x = -20
-20+80=60
do it again for the other angle measurement
60+60+40=180
therefore, angle A is 60°
It equals 1 74/81 which is less than 3 4/9
