
. Subtract 10x from both sides.

. Divide by 5 on both sides. x=20. So you would need to buy 20 movies.
The correct answer is 10/9 or 1.1. Hope this helps.
Answer:
7/8 squared = 49/56
Square root = 0.330718914.....
Hope that helps!
Step-by-step explanation:
150
30 degrees away from 180 and
60 degrees away from 90
If this is supposed to be

Then this can simply be reduced to

by the double angle formula for cosine