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sergij07 [2.7K]
3 years ago
8

Find 4 times 213 useing expanded form

Mathematics
2 answers:
notka56 [123]3 years ago
8 0
4 x 213 = 4 x (200 + 10 + 3) = 852
12345 [234]3 years ago
5 0
213 + 213 + 213 + 213 = 852
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−k−(−8k+7) I'm confused, what is the answer?
mash [69]
-k-(-8k+7)
Distribute the negative sign
-k+8k-7
Combine like terms
7k-7
Nothing further can be done with this equation so the answer is: 7k-7
3 0
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Why all integers are not whole numbers?
gayaneshka [121]

Answer:

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7 0
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15 more than -8 is:<br><br> can i please have a answer
RoseWind [281]

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4 0
3 years ago
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Solve for x. (Round to the nearest thousandth.)<br> 3x - 8 = 15
saul85 [17]

Answer:x = 7.667

Step-by-step explanation:

3x - 8 = 15

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3 0
3 years ago
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A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig
Anika [276]

Answer:  (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

Given : Sample size = 463

\mu=118\text{ minutes}

\sigma=65\text{ minutes}

Significance level : \alpha=1-0.99=0.01

Critical value : z_{\alpha/2}=z_{0.005}=\pm2.576

We assume that the population is normally distributed.

Now, the 90% confidence interval for the population mean will be :-

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Hence, 99% confidence interval for the mean study time of all first-year students = (110.22, 125.78)

3 0
3 years ago
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