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vazorg [7]
3 years ago
5

HELP I NEED TO FIND THIS ANSWER PLEASE !!!

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
7 0
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(6x2−4x−5)−1(3x2−7x+2)
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Cynthia Besch wants to buy a rug for a room that is 19 ft wide and 32 ft long. She wants to leave a uniform strip of floor aroun
Rainbow [258]

Answer:

The rug should be 15 ft wide and 28 ft long.

Step-by-step explanation:

I have attached a figure that represents the situation.

The the rug is l by h, the width of the strip of floor is w.

We are told that Cynthia can only afford 420 square feet of carpeting; therefore, it must be that

l*h=420 <em>(this says the area of the rug must be 420 square feet)</em>

From the figure we see that

l= 32-2w

h=19-2w

Therefore,

l*h=420\\\\(32-2w)(19-2w)=420

We expand this equation and get:

4w^2-102w+608=420\\\\4w^2-102w+188=0

using the quadratic equation we get two solutions:

w=2\\w=23.5

since the second solution, namely w=23.5, is larger than one of the dimensions of the room (is greater than 19 ft) it cannot be the width of the strip; therefore, we take w=2 to be our solution.

Now we find the dimensions of the rug:

l=32-2(2)=28\\\\h=19-2(2)=15

The rug is 15 ft wide and 28 ft long.

8 0
3 years ago
Which model represents 1/2 divided by 1/6?
kvasek [131]

Answer:

The answer I believe is :  D.

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Step-by-step explanation:

3 0
2 years ago
Write the repeating decimal as a fraction
olga_2 [115]

Answer:

The correct answer is: \frac{37}{90}

Step-by-step explanation:

You're using Acellus, right?

Let me guess: Algebra I?

3 0
3 years ago
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3[10-(27÷9) HELP PLEASE​
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Answer:

21

Step-by-step explanation:

You do the parentheses first, so 27/9 = 3

10-3 = 7

3 * 7 = 21

8 0
2 years ago
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Y = −4x + 3 <br> Graphing equations in slope-intercept form
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Y=-4x+3 is already in slope intercept form. Graphed it looks like this

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