Simplify the sum. (d^(2)+d-30)/(d^(2)+3d-40)+(d^(2)+1 4d+48)/(d^(2)-2d-48 ! will mark branliest if right!

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Solve the triangle. a = 21°, c = 105°, c = 5

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7