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borishaifa [10]
3 years ago
13

Which of the following situations are equal to 20? Select all that apply.

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0

Answer:

A and B

Step-by-step explanation:

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<img src="https://tex.z-dn.net/?f=%28x%5E3%2B4x%5E2-29x-56%29%2F%28x%2B7%29" id="TexFormula1" title="(x^3+4x^2-29x-56)/(x+7)" al
exis [7]

Answer:

The answer is x2 - 3x - 8.

Step-by-step explanation:

5 0
3 years ago
How can both parents be tall, even though their genes for height are not exactly the same?
SSSSS [86.1K]
Both of the Billy’s parents (calling the parent billy) being tall is a recessive trait therefore both Billy’s parents has to have at least one recessive trait to make a tall child. Billy’s genotype would be way tt (aka recessive, recessive).
5 0
3 years ago
Mr. Black bought 2 magazines for $9.95 each and 1 book for $14.95. If the sales tax is 6%, what is the total cost of Mr. Black's
miss Akunina [59]

Answer:

$36.94

Step-by-step explanation:

Okay, so. This is what we do. There is two magazines and they cost 9.95 each multiply 9.95 times 2

9.95 x 2 = 19.90

Okay, then he buys a book for 14.95 we add 19.9. and 14.95

19.90 + 14.95 = 34.85

Then we have a sales tax of 6% we would multiply 34.85 time 6%

34.85 x 6% = 2.09

Then we would add. 34.85 + 2.09

34.85 + 2.09 = 36.94

Therefore your answer is $36.94

Hope this helps!!!

3 0
3 years ago
Read 2 more answers
Round 48.078 to the nearest tenth<br><br> 48.1,<br><br> 48.08,<br><br> 50,<br><br> or,<br><br> 48.8
musickatia [10]

your  answer is 48.1

7 0
3 years ago
Read 2 more answers
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and
sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

\sigma=4 minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

The level of significance \alpha= 0.05 for 95% level of significance

For 95% confidence interval z_{\frac{\alpha}{2}}=1.96 from standard deviation table

Sample size required, n

n=\left (\frac{z_{\frac{\alpha}{2}}\cdot \sigma}{E} \right )^{2}=\left (\frac{1.96\cdot4}{75/60} \right )^{2}=39.337984

Rounding off, n=40

Sample size =40

Keywords:

95% confidence, sample size, Wall Street Journal

3 0
4 years ago
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