How do i simplify the complex numbers (1++9i)

If angle ase measures 168 degrees, find the measure of angle dse. the figure mag not be drawn to scale

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work

Solve the radical equation square root 25-40x=x-10