Use the substitution method to solve the system of equations. choose the
correct ordered pair.
x + 2y = 12
- x = -y-6
a. (7.1)
b. (9,3)
c. (6,0)
d. (8,2)

10x − 5y + 14 = 0 whats the answer pls

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?

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