Simplify the expression: 3x2(x2 - 4x - 2) + (5x3 + 7x2 + 2x + 11) show and explain your steps.

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?

Provide all steps given to find the answer. simplify: 5(2x+9)²