Answer:
x>-2
Step-by-step explanation:
13+x>11
Subtract 13 from each side
13-13+x>11-13
x>-2
3/4-(x+1/8)=5/16
3/4-x-1/8=5/16
3/4-1/8-5/16=x
Common denominator: 16
x=(4×3-2×1-5)/16=(12-2-5)/16=5/16
Answer: x=5/16
With 21 marbles in the bag, and 9 of them green, her chances are 9/21 that she will pull a green marble. If you reduce 9/21 you get 3/7 which is the way the answer should be expressed (in lowest terms)
Answer Probability of green = 3/7
Answer for B would be box 8
The scale factor is:

So you divide the corresponding lengths and the ratio you get is the scale factor. Hope it helps!