Find the value of this expression if x = -7 x squared - 1 over x + 4

Can (3,5 and square root 34) be sides on a right triangle?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

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.