Estimate a 15% tip on a dinner bill of $87.41 by first rounding the bill amount to the nearest ten dollars.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction