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Allushta [10]
2 years ago
5

How I can answer this question, NO LINKS, if you answer correctly I'll give u brainliest!

Mathematics
1 answer:
OverLord2011 [107]2 years ago
5 0

Answer:

The answer is : A

Step-by-step explanation:

Hope this helps!!! :)

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I dont now cause it depends on what you teacher asks of you

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Select 2 strategies that we can use to add 438 + 362.
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Add 438 + 2 + 60 + 300

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Step-by-step explanation:

The last one does not add up to 800

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3 years ago
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A rectangular piece of sheet metal has a length that is 6 in. less than twice the width. a square piece 3 in. on a side is cut f
m_a_m_a [10]
The original width would be 19 and the original length would be 32.

Let w be the width.  Then 2w-6 would be the length.  However, after cutting a 3-inch square from each corner, both the width and length left over to fold into a box would be 6 inches smaller; thus the dimensions would be w-6 and 2w-6-6 or 2w-12.  

Since the section cut out is 3 inches long, 3 will be the height of the box.

Volume is found by multiplying the length, width and height of the box; thus we have:

1014=(w-6)(2w-12)(3)

We multiply the binomials and have:
1014 = [w*2w-12*w-6*2w-6(-12)](3)
1014 = (2w²-12w-12w+72)(3)
1014 = (2w²-24w+72)(3)
1014 = 6w² - 72w + 216

When solving a quadratic equation, we want it set equal to 0.  Subtract 1014 from each side:

1014-1014 = 6w² - 72w + 216 - 1014
0 = 6w² - 72w - 798

We will use the quadratic formula to solve this:

w=\frac{-b\pm \sqrt{b^2-4ac}}{2a}&#10;\\&#10;\\=\frac{--72\pm \sqrt{(-72)^2-4(6)(-798)}}{2(6)}&#10;\\&#10;\\=\frac{72\pm \sqrt{5184--19152}}{12}&#10;\\&#10;\\=\frac{72\pm \sqrt{5184+19152}}{12}&#10;\\&#10;\\=\frac{72\pm \sqrt{24336}}{12}&#10;\\&#10;\\=\frac{72\pm 156}{12}&#10;\\&#10;\\=\frac{72+156}{12} \text{ or } \frac{72-156}{12}&#10;\\&#10;\\=\frac{228}{12} \text{ or } \frac{-84}{12}=19 \text{ or } -7

Since we cannot have a negative number for a measurement, 19 has to be the width; then 2(19)-6 = 32 would be the length.
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What are three equivalent ratios to 27:9
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3:1, 9:3, and 54:18

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Question 10<br> Round the following number to the nearest cent.<br> $2,399.0996
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2,399.10

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