9514 1404 393
Answer:
88.9
Step-by-step explanation:
The relevant trig relation is ...
Cos = Adjacent/Hypotenuse
cos(77°) = 20/x
x = 20/cos(77°)
x ≈ 88.9
y = 4
distribute
10 + 2y = 18
minus 10 from both sides
2y = 8
divide by 2
2+4x-3=6
6-3=3
Answer:3
(C.
I THINK-
