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Alona [7]
3 years ago
5

Factor completely. 81x^4 − 1

Mathematics
1 answer:
Taya2010 [7]3 years ago
6 0
81x^4-1=(9x^2-1)(9x^2+1)
=(3x-1)(3x+1)(9x^2+1)
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Find the area of the rectangle<br> (SHOW THE WORK)
iragen [17]
Segment AB= 6 segment AC= 4. 6*4=24

so the rectangle is 24 units.
4 0
3 years ago
At total of 2 feet of snow falls over three days on the first day 1/6 of the snow falls on the second day 7/12 of the snow falls
ioda

Answer:

Day\ 3 = 1\frac{3}{12}

Step-by-step explanation:

Given

Total = 2ft

Day\ 1 = \frac{1}{6}

Day\ 2 = \frac{7}{12}

Required

Determine the amount of snow on day 3

This can be calculated using:

Day\ 1 + Day\ 2 + Day\ 3 = Total

Substitute values for the known parameters

\frac{1}{6} + \frac{7}{12} + Day\ 3 = 2

Collect Like Terms

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Take LCM

Day\ 3 = \frac{24 - 2 - 7}{12}

Day\ 3 = \frac{15}{12}

Express as mixed number

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5 0
3 years ago
A person goes to the doctor and needs a 3-month prescription of medicine. The person is required to take 3 pills per day. How ma
amid [387]
Well start with 3x30 to find the amount he takes in 1 month . Then you take the answer (90)x3. Your answer will be 270 pills .
3 0
4 years ago
I need helpppppo!!! (: yes
Hatshy [7]

Answer:

2/5

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Factor the following trinomials x2-18x+81
poizon [28]

Answer:

(x - 9)(x - 9)

Step-by-step explanation:

<em>Hey there!</em>

Well to factor,

x^2-18x+81

we need to figure out what times what equal 81 and adds together to get -18.

-9*-9 = 81

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x*x = x^2

Factored - (x - 9)(x - 9)

<em>Hope this helps :)</em>

4 0
3 years ago
Read 2 more answers
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