What number is exactly divisible by 9

What is an alternate exterior angle

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup