Use substitution to find the x-coordinate of the solution to each system.
7) -x + 5y = 19
y=-2x + 6
a-2 b) 2
c) 1 d) -1
8) -8x + 5y = -20
y=-3x + 19
a) -6 b) -4
c) 4 d) 5
9) 4x - 6y= 12
y = -2x - 10
a) 3
b) 7
c) infinite number of solutions
d) -3
10) y = x + 10
| 3x - y=-18
a) 4 b)-6
c) 8 d) -8

Determine the quotient and remainder when (6a3)+11a2-4a-9) is divided by (3a-2) express your answer in the form q(a) + r(a)/d(a)

You download a video game to your computer. you have a 60-minute free trial of the game. it takes 5 1/6 minutes to set up the game 7 1/3 minutes to play each level. you want to find out how many levels you can play for free.which inequality describes the number of levels, l, you can play in 60 minutes? can you play 6 levels during your free trial? i need ,

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s