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Nezavi [6.7K]
3 years ago
14

4k^2 + 28k + 48 factor the polynomial​

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
5 0
4 (k+3) (k+) is the answer
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Find the area of a room that is 8-feet-wide and 9-feet-long.
yuradex [85]

Step-by-step explanation:

Area = l × b

= 9ft × 8ft

= 72ft²

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Step-by-step explanation:

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3 years ago
A sample of n = 16 scores has a mean of M = 40 and a variance of s2 = 64. What is the estimated standard error for the sample me
vaieri [72.5K]

Answer:

S.E = 2

Step-by-step explanation:

Given

Mean = 40

s^2 = 64 ----- variance

n = 16 ------------ sample

Required

Determine the S.E

The estimated standard error (S.E) for the sample mean is calculated using the following formula:

S.E = \frac{SD}{\sqrt n}

Where

SD = Standard\ Deviation

SD = \sqrt {s^2}

SD = \sqrt {64}

SD = 8

So:

S.E = \frac{SD}{\sqrt n}

S.E = \frac{8}{\sqrt{16}}

S.E = \frac{8}{4}

S.E = 2

Hence: the estimated standard error for the sample mean is 2

4 0
3 years ago
Perform the indicated operation. <br> 5/a - 3/b + 1/ab
MAVERICK [17]
The answer is 5b-3a+1/ab! 
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3 years ago
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5y-5y^2-5+2+2y+3y^2-1
LiRa [457]
5y-5y^2-5+2+2y+3y^2-1

collect like terms

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reorder the terms

-2y^2+7y-4

-2y^2+7y-4 is your final answer, I hope this helps!
6 0
4 years ago
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