The area of the rectangular flowerbed is 20.4 square meters with a length of 12 square meters. How many meters of edging are nee
2 answers:
Answer:
<h2>There are needed 27.4 meters to go around the flowerbed.</h2>Step-by-step explanation:
In this problem, we have to calculate the perimeter of the flowerbed, which is the sum of all sides of the rectangular figure.
So, we know that the area of the flower bed is:
Its length is:
As a rectangle, its area would be:
Now we know the length, we can find the perimeter, remember that's just the sum of all sides, that is:
Therefore, there are needed 27.4 meters to go around the flowerbed.
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The formula for depreciation is:
Where x = Initial value,
y= Amount after depreciation.
r= Rate of depreciation,
t = time (in years)
According to given problem,
x = 1040, y= 944 and t = 12 months =1 year.
So, first step is to plug in these values in the above formula, So,
944 = 1040 (1 -r)
Divide each sides by 1040.
0.907692308 =1 - r
0.907692308 - 1 = -r Subtract 1 from each sides.
-0.092307692 = -r
So, r = 0.09 or 9%.
Now plug in 0.09 in the above equation to get the depreciation equation. So,
So,
b) To find the value of the bike after 5 months,
plug in t = 5 months= 5/12 = 0.41667 years in the above equation of depreciation.
So,
y = 1040 * 0.961465659
y = 999.9242852
y = 1000 (Rounded to nearest integer).
Hence, the value of the bike after 5 months is $1000.