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Harlamova29_29 [7]
3 years ago
12

What is 77 = 4x + 57

Mathematics
1 answer:
Svetach [21]3 years ago
3 0

Answer:

x=5

Step-by-step explanation:

77=4x+57

Subtract 57 from both sides:

4x=20

Divide both sides by 4:

x=5

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Answer:

The length of the actual train's car is <u>67.5 feet.</u>

Step-by-step explanation:

Given:

The scale of a model train is 1 inch to 13.5 ft.

Now, to get the length of the actual car of the train.

Let the length of actual train's car be x.

And, the length of the car of model train = 5\ inches\ long.

<em>According to the scale of the model train, 1 inch is equivalent to 13.5 ft. </em>

<em>Thus, 5 inches is equivalent to </em>x.<em />

Now, to get the length of actual train's car using cross multiplication method:

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By cross multiplying we get:

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Step-by-step explanation:

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