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Lostsunrise [7]
3 years ago
6

Last week the office used boxes of paper. This week they used boxes of paper. How many more boxes did they use last week than th

is week?
Lol I need help again

Mathematics
1 answer:
stealth61 [152]3 years ago
8 0

Answer:

Nope no help. :d

Step-by-step explanation:

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Nimfa-mama [501]

Answer:

through factorisization

Step-by-step explanation:

hope it helps

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Vladimir79 [104]

Answer: The height of the building is 50.75 feet.

Step-by-step explanation:

The ratio between the height of the object and the casted shadow must be equal for all the objects, as the angle at which the source if light impacts them is the same.

For the person, we know that it is 5.8ft tall, and the shadow is 3.2ft long.

The ratio will be: 5.8ft/3.2ft = 1.8125

Now, if H is the height of the building, and the shadow that the building casts is 28ft, we must have:

H/28ft = 1.8125

Now we can solve this for H.

H = 1.8125*28ft = 50.75 ft

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3 years ago
A line has a slope of -2 and a y-intercept of –3. Graph the line using the slope and y-intercept.
masha68 [24]

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3 years ago
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Which of the following expressions can be factored by grouping? (Select all that apply.)
Greeley [361]

Answer:

Options (3), (4) and (5)

Step-by-step explanation:

1). a² - 9a + 7ab + 63b

  = a(a - 9) + 7b(a + 9)

  Now we can not solve this problem further.

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2). 3a + 4ab - b - 12

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   Therefore, can't be factored by grouping.

3). ab + 6b - 2a - 12

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   = (b - 2)(a + 6)

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4). x³ + 9x²+ 7x + 63

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   Therefore, the given expression can be factored by grouping.

5). ay² + a - y² - 1

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  = (a - 1)(y² + 1)

  This expression can be factored by the grouping method.

Options (3), (4) and (5) are the correct answers.

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