Find the midpoint of the line segment joining the points r(2,6) and s(-1,7)

1. what is the measure of ∠abc? what is the measure of ∠abd?

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

Find the solution of this system of equation -7x+y=-20 9x-3y=36