Point M is the midpoint of AB. If AM =7x-15 and MB=3x+21, how long is segment AM?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula