Solve for x, showing the steps in your work.

Which math sentence can be used to determine if the triangle is a right triangle?

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

3x + 4y = 5 x- 3y = -7 solve by substitution