Answer:
Step-by-step explanation:
a=-7
r=21/-7=-3

The answer would be 54 medium T-shirts out of the 126 on the rack
Answer:
B. 0.4
Step-by-step explanation:
5 + 4 + 3 = 12 balls
5 blue / 12 balls = 0.4
Your answer would be 3.75.
Answer: x=14
Step-by-step explanation:
The angles in a triangle are equal to 180 so
6x + 3 + 5x + x + 9 = 180
12x + 12 = 180
-12 -12
12x = 168
x = 14