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VashaNatasha [74]
3 years ago
7

Ronald is changing the shape of his backyard from 100 feet long by 22 feet wide to a square that has the same area. What is the

perimeter of the square backyard, rounded to the nearest whole number?
A. 188 ft
B. 200 ft
C. 212 ft
D. 168 ft
Mathematics
2 answers:
Usimov [2.4K]3 years ago
5 0

Answer:

the answer is A 188 ft

Step-by-step explanation:

Step2247 [10]3 years ago
3 0

Area = Length x Width = 100 x 22 = 2200 ft²


Length of a square with area 2200 ft² = √2200 = 46.9 ft


Perimeter of the square = 46.9 x 4 = 188 ft (nearest feet)


Answer: (A) 188 ft

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Answer:

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Step-by-step explanation:

A composite function can be written as g(h(x)), where h and g are basic functions.

For the function f(x)=3(4x^2+8)^5.

The inner function is the part we evaluate first. Frequently, we can identify the correct expression because it will appear within a grouping symbol one or more times in our composed function.

Here, we have 4x^2+8 inside parentheses. So h(x)=4x^2 + 8 is the inner function and the outer function is g(x)=3x^5.

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It tells us how to differentiate composite functions.

The function f(x)=3(4x^2+8)^5 is the composition, g(h(x)), of

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The derivative of this is computed as

\frac{d}{dx}\left(3\left(4x^2+8\right)^5\right)=3\frac{d}{dx}\left(\left(4x^2+8\right)^5\right)\\\\\mathrm{Apply\:the\:chain\:rule}:\quad \frac{df\left(u\right)}{dx}=\frac{df}{du}\cdot \frac{du}{dx}\\f=u^5,\:\:u=\left(4x^2+8\right)\\\\3\frac{d}{du}\left(u^5\right)\frac{d}{dx}\left(4x^2+8\right)\\\\3\cdot \:5\left(4x^2+8\right)^4\cdot \:8x\\\\120x\left(4x^2+8\right)^4

The derivative of the function is \frac{d}{dx}\left(3\left(4x^2+8\right)^5\right)=120x\left(4x^2+8\right)^4.

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