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Delvig [45]
3 years ago
11

The length and width of a rectangle must have a sum of 80. Find the dimensions of the rectangle that will have the maximum area.

​ [Hint: Let x and 80−x be the length and width. The area can be described by the function ​f(x)=​x(80−​x).]

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
6 0
I hope this helps you

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sergeinik [125]

Answer:

y = 2x - 3

Yes, your answer is correct.

Step-by-step explanation:

First, find the slope of the two points by using the slope formula:

        y2 - y1

m = -------------

        x2 - x1

         13 - 5

m = -------------

          8 - 4

         8

m = ------- = 2

         4

To find the y-intercept, plug in values into the slope-intercept formula:

y = mx + b

Where m = slope and b= y-intercept. Use any one of the points. I'll be using (4,5):

5 = (2) (4) + b

5 = 8 + b

-3 = b

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y = 2x - 3

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Alla [95]
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What’s 25 divided by 5?
Gnom [1K]
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andrey2020 [161]

Answer: y = 6

Step-by-step explanation:

A square's area can be done by using s^2, where s is y in this case.  Because there are 5 squares, the area of the figure is 5y^2.  Because the area is also 180cm, 5y^2=180.

Then divide both sides of the equation by 5 to get y^2 = 36.  Then square root both sides of the equation to get y = 6.

Hope it helps <3

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Step-by-step explanation:

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3 years ago
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