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Kipish [7]
3 years ago
5

Problem solving your family has a rectangular pool that measures 18 feet by 9 feet. your family wants to put a deck around the p

ool but is not sure how wide to make the deck. determine how wide the deck should be when the total area of the pool and deck is 400 square feet. what is the width of the deck?
Mathematics
1 answer:
tester [92]3 years ago
7 0
Let w be the width of the deck. Then, using the total area, we get:
(9+2w)(18+2w)=400
4w²+54w-238=0
2w²+27w-119=0
(2w-7)(w+17)=0
w=-17 or 7/2
Using the positive value, we get a width of 3&1/2 ft. for the deck
☺☺☺☺
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Answer:

x = 2

Step-by-step explanation:

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Fofino [41]

Answer:

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2. We assume, that x is the value we are looking for.

3. If 260 is 100%, so we can write it down as 260=100%.

4. We know, that x is 6.75% of the output value, so we can write it down as x=6.75%.

5. Now we have two simple equations:

1) 260=100%

2) x=6.75%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

260/x=100%/6.75%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 6.75% of 260

260/x=100/6.75

(260/x)*x=(100/6.75)*x       - we multiply both sides of the equation by x

260=14.814814814815*x       - we divide both sides of the equation by (14.814814814815) to get x

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now we have:

6.75% of 260=17.55

Step-by-step explanation:

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3 years ago
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olga_2 [115]

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3 students

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3 0
3 years ago
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MrMuchimi

<em>Note: Your question seems a little bit ambiguous. So, I am assuming the given function f(x)=9x+7.</em>

<em>Thus, I am solving based on it. It would still clear your concept. </em>

Answer:

The inverse of f(x)=9x+7

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Step-by-step explanation:

Given the function

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