which expression would be easier to simplify if you used associative property to change the grouping? A. 30 + (70-47.5)

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose