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Damm [24]
3 years ago
12

A rectangles width is three inches less than 5 times its length.What are the dimensions of the perimeter is 138 inches?

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
3 0

Length = X

Width = 5x-3

For perimeter we multiply the dimensions by two.

2(x) + 2(5x-3) = 138

2x + 10x-6 = 138

12x-6 =138

12x=144

144/12 = 12

Length = 12

Width = 5(12) - 3 = 57

Dimensions = 12 x 57

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<h3>Further explanation   </h3>

Given:  

  • The typical balance on Lucy's credit card is $650.
  • The interest rate (APR) on her credit card is 18%.

Question:  

How much in interest would you expect Lucy to be charged in a typical month?

The Process:  

This problem includes the type of determining simple interest.

\boxed{ \ I = P \times r \times t \ }  

where,

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  • t = time (in years)

This time we will find out how much in interest we would expect to be charged in a typical month.

The data is as follows:

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Let us calculate how much in interest we would expect to be charged in a typical month.

\boxed{ \ = 650 \times \frac{18}{100} \times \frac{1}{12} \ }  

\boxed{ \ = 65 \times \frac{3}{10} \times \frac{1}{2} \ }  

\boxed{ \ = \frac{195}{10} \times \frac{1}{2} \ }  

\boxed{ \ = \frac{97.5}{10} \ }  

\boxed{ \ = \frac{975}{100} \ }  

Thus the amount of interest we would expect Lucy to be charged in a typical month is $ 9.75.

_ _ _ _ _ _ _ _ _ _

Notes  

We must be able to distinguish between simple and compound interest. Please learn about this in the link attached below.

<h3>Learn more   </h3>
  1. What interest (in dollars) does he receive annually?  brainly.com/question/8192969    
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