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Anastaziya [24]
3 years ago
9

Evaluate the given numerical expression (5+7 to the 3rd power divided by 7 times 7

Mathematics
1 answer:
-BARSIC- [3]3 years ago
8 0

{(5 + 7)}^{3}  \div 7 \times 7 \\  {12}^{3}  \div 7 \times 7 \\ 1728 \div 7 \times 7 \\ 1728

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Help please and thank you
aksik [14]
Remember
(a^b)^c=a^{bc}
and
\frac{x^a}{x^b}=x^{a-b}


so

\frac{(7^2)^5}{7^{-6}}=
\frac{7^{2*5}}{7^{-6}}=
\frac{7^{10}}{7^{-6}}=
7^{10-(-6)}=
7^{10+6}=
7^{16}

the answer is D
5 0
4 years ago
The sum of two mixed numbers with unlike denominators is 5 3/5. What might the two mixed numbers be? Show as many different solu
Alika [10]

https://www.calculatorsoup.com/calculators/math/mixednumbers.php

this site is a fraction calculator, it what i use try it!

8 0
3 years ago
The radius of circle A is half of the radius of circle B. What is the area of circle A
labwork [276]
The answer is D Explanation: I learned this already and I had this question before and I got it right
8 0
3 years ago
An outlier always affects the mean.<br><br><br> True False
Ipatiy [6.2K]
Yes. If you have very high or very low outliers in your data set, it is generally preferred to use the median - the mid-point when all data points are arranged from least to greatest. 

<span>A good example for when to avoid the mean and prefer the median is salary. The mean is less good here as there are a few very high salaries which skew the distribution to the right. This drags the mean higher to the point where it is disproportionately affected by the few higher salaries. In this case, the median would only be slightly affected by the few high salaries and is a better representation of the whole of the data. </span>

<span>In general, if the distribution is not normal, the mean is less appropriate than the median.</span>
3 0
4 years ago
Read 2 more answers
Determine whether the situation calls for a survey, an observational study, or an experiment.
grandymaker [24]
Survey

By conducting a survey, you can ask people who have seen the new movie what they think about it. This will be the best approach to get a straightforward answer from these people.
3 0
3 years ago
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