Answer:
N=48
Step-by-step explanation:
2^9+2^4+48=576
576 is a perfect square
Let s = northbound train
Then
2s = southbound train
:
Distance = time * speed
4s + 4(2s) = 600
:
4s + 8s = 600
:
12s = 600
:
s = 600/12
:
s = 50 mph is the northbound train
Then
2(50) = 100 mph is the southbound train
:
:
Check:
4(50) + 4(100) = 600
You would do 24 times 3 and get 72 or divide 24 by 1/4=0.25
-3x+6.3=-14.4
-6.3=-6.3
-<u>3x</u>=-<u>20.7</u>
-3 -3
x=6.9
Answer:
1 3/4 simplified or 1 12/16 not simplified
