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nataly862011 [7]
3 years ago
6

Please tell me the answers i am confused and need help

Mathematics
1 answer:
joja [24]3 years ago
8 0

Answer:

Simplified= 7x+6 When x=3 the expression=27

Step-by-step explanation:

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Two trains leave Cleveland at the same time. One train travels east and the other travels west. The speed of the westbound train
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Answer:

The eastbound train travels at 92 mph and the westbound train travels at 96 mph.

Step-by-step explanation:

We know that Velocity = distance / time

If the eastbound train travels at x miles per hour, the westbound train travels at x + 4 mph.

After 3.5 hours, they are 658 miles apart. If we solve for distance the formula given above we have: Distance = velocity x time. We have that the total distance between both trains is 658 miles.

Substituting the values of the problem and solving for x we have

658 = 3.5x+3.5(x+4)\\658=3.5x+3.5x+14\\644=7x\\92=x

Thus, the eastbound train travels at 92 mph and the westbound train travels at 96 mph.

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3 years ago
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Answer:

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The definition of a parallelogram is a quadrilateral that has two sets of parallel sides.

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3 years ago
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Step-by-step explanation:

It sounds like they want the ratio to be given in that order.

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Answer:

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Step-by-step explanation:

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