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Oksi-84 [34.3K]
3 years ago
12

The kilo- prefix in the metric system means _______ units.

Mathematics
1 answer:
aivan3 [116]3 years ago
6 0
Kilo means 1000 units

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When x^2-2x + 14 is divided by x-1 the remainder is?<br> Is it 13?
julsineya [31]

Yes, 13 is the remainder.

See dat pic for full solution.

5 0
2 years ago
On Monday, Mrs. Smith drove 3.56 miles to go to the grocery store, 5.9 miles to go to the bank, and 12.087 miles to go out to di
Yuki888 [10]

Answer:

22

Step-by-step explanation:

3.56 = 4

5.9 = 6

12.087 = 12

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3 years ago
the daily temperatures last week were 68,70,73,75,76,76 and 82 degrees. what fraction of the temperatures were above 75 degress?
Annette [7]
3/7. There are 7 temperatures, so the denominator is 7. However, only 3 of them were above 75, so the numerator is 3.
8 0
3 years ago
Read 2 more answers
(b) how many measurements must be averaged to get a margin of error of ±0.0001 with 98% confidence? (round your answer up to the
goblinko [34]
Given that the scale readings of the laboratory scale is normally distributed with an unknown mean and a standard deviation of 0.0002 grams.

Part A:

If the weight is weighted 5 times and the mean weight is 10.0023 grams, the 98% confidence interval for μ, the true mean of the scale readings is given by:

98\% \ C. \ I.=\bar{x}\pm z_{\alpha/2}\left(\frac{\sigma}{\sqrt{n}}\right) \\  \\ =10.0023\pm2.33\left(\frac{0.0002}{\sqrt{5}}\right) \\  \\ =10.0023\pm2.33(0.000089) \\  \\ =10.0023\pm0.00021 \\  \\ =(10.0023-0.00021, \ 10.0023+0.00021) \\  \\ =(10.0021, \ 10.0025)

Thus, we are 98% confidence that the true mean of the scale readings is between 10.0021 and 10.0025.



Part B:

To get a margin of error of +/- 0.0001 with a 98% confidence, then

\pm z_{\alpha/2}\left(\frac{\sigma}{\sqrt{n}}\right)=\pm0.0001 \\ \\ \Rightarrow2.33\left(\frac{0.0002}{\sqrt{n}}\right)=0.0001 \\  \\ \Rightarrow\left(\frac{0.0002}{\sqrt{n}}\right)= \frac{0.0001}{2.33} =0.0000429 \\  \\ \Rightarrow\sqrt{n}= \frac{0.0002}{0.0000429} =4.66 \\  \\ \Rightarrow n=4.66^2=21.7156\approx22

Therefore, the number of <span>measurements that must be averaged to get a margin of error of ±0.0001 with 98% confidence is 22.</span>
8 0
3 years ago
Which of the following statements is false?
Over [174]
It’s going to be C because it’s false on all the other ones so yeah
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3 years ago
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