If a^2 -b^2 =12 and a-b=4 what is the bay of a +b

How does reflecting or rotating a figure change the interior angles of the figure?

Ken leaves work 20 minutes late. he decides to make up time by taking the toll road instead of side streets. he can travel three times faster by taking the toll road. create an equation to represent his total travel time, including wait time, where x is the number of minutes the drive was expected to take

Acount went up from 450 to 600. what was the approximate percent increase?