L = S + 80
180 - L - S = S + 10 simplify: L = 180 - 2S - 10
L = 170 - 2S = S + 80
3S = 90
S = 30 L = 110 3rd angle = 40
X=22. The supplementary angle is 90°, so the 66° angle, plus (x+2) has to add up to 90° too.
Answer:
y ≈ 9.24
Step-by-step explanation:
Using the cosine ratio in the right triangle.
cos30° = 
= 
( multiply both sides by y )
y × cos30° = 8 ( divide both sides by cos30° )
y = 
≈ 9.24 ( to the nearest hundredth )
Answer:
y=-3/7x+5
Step-by-step explanation:
It’s 1 that’s in the ten billions
