The surface areas of two similar cones are 20ft and 125 ft what is the scale factor

Complete the square to determine the minimum or maximum value of the function defined by the expression. x2 − 12x − 2 a) maximum value at 38 b) minimum value at 38 c) maximum value at −38 d) minimum value at −38

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?