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allochka39001 [22]
3 years ago
5

The Natchez Trace Bridge in Franklin, Tennessee, is 1,500 feet long. Suppose you build a model of the bridge using a scale of 1

inch:25 feet. How long is the model? (Hint: 12 inches = 1 foot).
a.
5 ft
c.
7 ft
b.
6 ft
d.
8 ft
Mathematics
1 answer:
noname [10]3 years ago
5 0
Set this up as a ratio putting inches on top and feet on bottom. Then your first ratio would be 1/25 since 1 inch is the same as 25 feet.  In between them goes an equals sign and the the other ratio has an x on top (because inches is what we are looking for) and the 1500 on the bottom. Cross multiply to solve for x:
1(1500) = x(25).  Divide both sides by 25 to get 60
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3 years ago
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Answer:

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Step-by-step explanation:

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We need to apply our ability to convert word problems in to mathematical expressions.

We were told that the bottom of the triangle is x units.

From the diagram perimeter 4x + 12 + x + 3 + x = 6x + 15

Four times the length of the bottom will be 4x .

12 more than 4 times the bottom will be 4x + 12.  

Hence another side of the triangle is 4x + 12.

Finally we were told that the last side is 3 more than the bottom, that will be      x + 3.

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<u>Answer:</u>

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<u>Steps:</u>

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