Answer:
28.3
Step-by-step explanation:
12/20 = 17/x
cross multiply
12x=340
divide each side by 12
x=28.3333333333.......
round it to nearest tenth
28.3
Answer:
12
Step-by-step explanation:
3 divided by 1/4 = 3 x 4 = 12
Answer:
3x+y=-31
Step-by-step explanation:

Slope of perpendicular line is -3.

Sub in the point (10, -1)

Answer:
KEYS is a square
Showing as plotted and connected points
See the attached