Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
Answer:
EF=3.6
Step-by-step explanation:
I'm going to use Pythagorean Theorem for side EF.
4.8^2+EF^2=6^2
23.04+EF^2=36
-23.04 -23.04
EF^2=12.96
sqrt sqrt
EF=3.6
25 is the length of x, using the 30-60-90 special triangle method
1,200 divded by 3 is 400. Multiply 400 by sixty, and you get 24,000.
So the answer is C) 24,000
