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
Domain is (-10, infinity) and range is negative infinity, positive infinity.
Answer:
The answer is: A
Step-by-step explanation:
The way the numbers are counting around the wheel and the color pattern all match A
Answer:
No
Step-by-step explanation:
7.8 is 7.8 not 9 they are both rational numbers