It would be 30 degrees since a line is 180. You subtract 150 from 180 and get 30.
Answer: 6
Step-by-step explanation:
15 - 9 = 6 to the quadratics x inequalities formula x b to the power of 
I like the substitution method. Which is when you make one equation equal only x or y and plug it into the other equation)
There is also the graphing method. If you graphed it, it might not be quite as accurate (at least on hand, on computer you would be pretty exact)
Then there is the elimination method. You multiply one of the equations by a coefficient so that you can eliminate x or y from the equation.
Answer: There are 
in one inch.
