20 a triangle has side lengths 20cm, 27cm, 21cm. is the triangle a right angle? show your work

Suppose a gym membership has an initial enrollment fee of $75 and then a fee of $29 a month. which equation models the cost, c, of the gym membership for m months?

How many terms does the polynomial x^2 y^2 have

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.