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Eddi Din [679]
3 years ago
10

The perimeter of a rectangle is 40 inches. If the length of the rectangle is 15 inches, which equation could be used to find the

width, x?
OA. x + 2(15) = 40
OB. 15(x + 2) = 40
O.Cx+ 15 = 40
OD. 2(x + 15) = 40
Mathematics
1 answer:
Alinara [238K]3 years ago
4 0
<h2><u>A</u><u> </u><u>N</u><u> </u><u>S</u><u> </u><u>W</u><u> </u><u>E</u><u> </u><u>R</u><u> </u><u>:</u></h2>

  • Perimeter of rectangle = 40 inches
  • Length of rectangle = 15 inches

Let the required Breadth of rectangle be 'x' inches

Perimeter of rectangle is calculated by the given below formula :

  • Perimeter = 2(Length + Breadth)

Now, substitute the given values in above formula :

→ 40 = 2(15 + x)

<u>Hence</u><u>,</u><u>the</u><u> </u><u>optio</u><u>n</u><u> </u><u>(</u><u>d</u><u>)</u><u> </u><u>2</u><u>(</u><u>x</u><u> </u><u>+</u><u> </u><u>1</u><u>5</u><u>)</u><u> </u><u>=</u><u> </u><u>4</u><u>0</u><u> </u><u>is</u><u> </u><u>the</u><u> </u><u>corre</u><u>ct</u><u> </u><u>answer</u><u>.</u>

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Answer:

Seems like someone answered them, because the red writing is right, but here's the answers with explanation

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  • Now the answers:
  1. Vertex is (-1,0) because if you look at the numbers for f(x) they go, 4 then 1, then 0, but instead of getting smaller they start getting bigger, so it changes as this point and goes up so <em>minimum</em>
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  3. vertex is (-4,-5) but this one is different from the first two. f(x) starts with -17 then -9, then -5, then it sort of stops and stays there, then -5 then drops and gets smaller. So it changes at x=-4 so use this point, immediately before the change and it is <em>maximum</em>
  4. Vertex is (21,500) because f(x) was getting bigger but then it changes and goes down and becomes smaller, so it is <em>maximum</em>
  5. vertex is (1.5,6) the point immediately before the change, and we see f(x) was getting smaller going down, but it changes and goes up and gets bigger so it is <em>minimum</em>
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Step-by-step explanation:

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Please explain to me how to solve this problem and what would be the correct answer answer asap!!!
hodyreva [135]
Given
f(x)= -3x - 5
g(x)= 4x - 2

Find
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substitute the f and g values in (f - g)

(f - g)(x)= -3x - 5 - (4x - 2)
change the signs in parentheses because there is a negative sign in front of the parentheses

(f - g)(x)= -3x - 5 - 4x + 2
combine like terms

(f - g)(x)= -7x - 3


ANSWER: (f - g)(x)= -7x - 3

Hope this helps! :)
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