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VMariaS [17]
3 years ago
15

A coastal geologist estimates that a certain country's beaches are eroding at a rate of 1.51, point, 5 feet per year. According

to the geologist's estimate, how long will it take, in years, for the country's beaches to erode by 21 feet?
Mathematics
1 answer:
Novay_Z [31]3 years ago
6 0

Answer:

14 years.

Step-by-step explanation:

Let x represent number of years.

We have been given that a coastal geologist estimates that a certain country's beaches are eroding at a rate of 1.5 feet per year. We are asked to find the number of years, it will take for the country's beaches to erode by 21 feet.

We will use proportions to solve our given problem as proportion states that two quantities are equal:

\frac{\text{Erosion in feet}}{\text{Number of years}}=\frac{1.5}{1}

Upon substituting our given values in above equation, we will get:

\frac{21}{x}=\frac{1.5}{1}

Let us cross multiply our equation as:

1.5x=21*1

1.5x=21

Divide both sides by 1.5:

\frac{1.5x}{1.5}=\frac{21}{1.5}

x=14

Therefore, it will take 14 years for the country's beaches to erode by 21 feet.

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The explanation:

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Hope this helped you :D
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3 years ago
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GenaCL600 [577]

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5 0
3 years ago
Will give brainliest, <br> (404/4)x(2x2) to the power of 2.
Ganezh [65]

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163216

Step-by-step explanation:

If it's the sign of multiplication

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7 0
3 years ago
6c – 7 + d + 4 – 6d combine like terms
kkurt [141]

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5 0
3 years ago
A swimming pool is to be constructed in a 1,408-ft2 backyard. There is to be a fence that will surround a 12-by-24-foot pool. Th
kkurt [141]

The width of the pool is 10 feet.

<h3>What is area of rectangle?</h3>

The area of rectangle is product of length and breadth.

Let the width be x.

length = 24 + 2x. and breadth =  12 + 2x

We know, area= 1408 ft².

(12 + 2x)(24 + 2x) = 1408

12*24 + 12*2x + 24*2x + (2x)² = 1408

288 + 72x + 4x² = 1408

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x² + 18x - 280 = 0

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Learn more about this concept here:

brainly.com/question/26638297

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6 0
2 years ago
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