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GaryK [48]
3 years ago
8

What is the class boundaries of 90-99

Mathematics
1 answer:
tino4ka555 [31]3 years ago
7 0
89.5, 99.5 (hope this helped)
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The volume of the world's oceans is nearly 1.5 x 10^9 cubic kilometers. Write this number in scientific notation.
Ostrovityanka [42]

The answer is 1.5x10⁹ That is the scientific notation

4 0
3 years ago
Please answer will mark brainliest
aksik [14]
Interesting think. So sorry if you get it wrong
5 0
2 years ago
Read 2 more answers
The variance can never bea.zerob.larger than the standard deviationc.negatived.smaller than the standard deviation
MrRa [10]

Answer:

c.negative

True, by definition since the variance take in count the differences around the mean squared, then we can't have a negative value for a sum of square values.

Step-by-step explanation:

We need to remember that the variance is a measure of dispersion for a dataset respect to a measure of central tendency called the mean. The mean is defined as:

\bar x = \frac{\sum_{i=1}^n X_i}{n}

And the population mean is given by:

\mu= \frac{\sum_{i=1}^n X_i}{N}

The population variance is defined by:

\sigma^2 = \frac{\sum_{i=1}^n (X_i -\mu)^2}{N}

And the sample variance is defined as:

s^2= \frac{\sum_{i=1}^n (X_i -\bar x)}{n-1}

Now if we analyze the options we have this:

a.zero

False, if all the values are the same then the mean would be the same to the values and the difference between each value and the mean would 0 and indeed the variance would be 0.

b.larger than the standard deviation

False, if the population standard deviation is \sigma=2 then the variance would be \sigma^2 = 4 and as we can see is higher than the standard deviation

c.negative

True, by definition since the variance take in count the differences around the mean squared, then we can't have a negative value for a sum of square values.

d.smaller than the standard deviation

False, if the population standard deviation is \sigma=0.1 then the variance would be \sigma^2 = 0.01 and as we can see is lower than the standard deviation

7 0
3 years ago
What is 600,319,287,914 + 297,997,000,026?
geniusboy [140]

898316287940

hope this helps, back to my hole i go

6 0
3 years ago
Read 2 more answers
PLEASE HELP!!<br> Solve.<br><br> 5=15x−3<br><br> Enter your answer in the box.<br><br> x=
patriot [66]

x = 1/120

i did not see the comment about the 1/5 until now

hope this helps

3 0
3 years ago
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