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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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11111nata11111 [884]

Answer:

21 units

Step-by-step explanation:

6 0
2 years ago
A pipe is leaking at 1.5 cups per day. about how many gallons per week is the pipe leaking
Alenkinab [10]
Remember that there are 16 cups in a gallon.

The pipe leaks 1.5 cups each day, so in one week, or 7 days, the cup leaks 1.5 times 7 cups, which equates to 10.5 cups per week.
To find this number in gallons, divide 10.5 by 16.
This equals .65625 gallons per week.
Hope this helps! 
~Chrys
8 0
3 years ago
A. 3/5<br> B. 3/10<br> C. 1/5<br> D. 1/2
Softa [21]
It’s definitely all of the above there all basiclalu the same factor answer it’s just with different numbers
5 0
2 years ago
Multiple by moving the decimal point 24.6x100,37x1,000 0.367x10,000,0.005x1000,000 .
lesya [120]

The answers are 2460, 37,000, 3670 and 5000

Step-by-step explanation:

  • Step 1: Find the answers for each by multiplying.

24.6 × 100 = 2460 (moved one decimal point)

37 × 1000 = 37,000

0.367 × 10000 = 3670 (moved three decimal points)

0.005 × 1000,000 = 5000 (moved three decimal points)

8 0
3 years ago
Lisle bought 38 pounds of red grapes and 512 pound of green grapes how many pounds of Grapes did he buy
Svet_ta [14]

Answer:

19/24

Step-by-step explanation:

From the question we are informed that Lisle bought 3/8 pounds of red grapes and 5/12 pound of green grapes

✓3/8 pounds of red grapes and 5//12

✓First thing to do is to add the fractions

But we need " the least common denominator" because their denominator are not the same, we need to make it the same...

✓ The two denominator ( 8 and 12) are both factor of 24, therefore their "least common denominator" is 24.

✓To make 3/8 pounds of red grapes has a denominator of 24, we multiply both the denominator & numerator with factor of 3.

3/8 = (3×3)/(8×3)=9/24

✓To make 5/12 pounds of green grapes has a denominator of 24, we multiply both the denominator & numerator with factor of 2.

5/12= (5×2)/(12×2)= 10/24

✓ we can see they both have the same denominator, then we can now "add both denominators"

(9+10)=19

✓ Then place the addition of the denominators on the least common denominator.

= 19/24.

Therefore, he bought 19/24 of grapes

5 0
3 years ago
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