Answer:
140 mile
Step-by-step explanation:

While x is the speed of the second train.
Answer:
8x^2-2x+4x+1=0
2x(4x-1)-1(4x-1)=0
(2x-1)(4x-1)
x=1/2,1/4
Step-by-step explanation:
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2 because the square root is 12 and the distance is 12 units
Answer:
1 2/3m
Step-by-step explanation:
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