0.42 equals
- 42/100
- 21/50
The simplest form for 0.42 is 21/50
79 is 4 below 83 so her next grade needs to be 4 above in order to get an average of 83. The answer is 87.
Answer:
Step-by-step explanation:

Answer: 3:4
Step-by-step explanation:
If you divide both 30 and 40 by 10 you get 3 and 4
Since it says blue:green the answer is 3:4
Answer:
let t = no of minutes when they are at the same altitude
:
52200 - 3300t = 2500t
52200 = 3300t + 2500t
52200 = 5800t
t = 52200/5800
t = 9 minutes they will be at the same altitude
:
The altitude:
9*2500 = 22500 ft
:
Check on other train
52200 - 9(3300) =
52200 - 29700 = 22500 ft