Answer:
160
Step-by-step explanation:
is there 240 seventh graders in total? If so all you have to do is:
240 x 2/3
which equals 160 seventh graders.
x= 60° degree
180°-40°= 140°
140= x+ x+ 20
140 -20 =2x
2x = 140 - 20
2x = 120
x = 60°
(1/2)(x³ - 3)
That would be (1/2)(x³ - 3).
Brainlist pls?
The Answer is B