What is the product of 10√20 and 9√8

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?