Answer:
Expression: 18 - 12 + 7. In 3 days, the temperature will be 13 degrees.
Step-by-step explanation:
The temperature is 18 degrees.
It will decrease 12 degrees after one day. So, it is 18 - 12.
Then it will increase by 7 degrees after another day. So, it is 18 - 12 + 7.
18 - 12 = 6. 6 + 7 = 13.
So, the expression is 18 - 12 + 7 and the answer is 13 degrees (i think)
The next step Nolan should take is to find the average of the distances from the mean.
<h3>What is meant by mean absolute deviation?</h3>
A measure of variance in a data set is the mean absolute deviation. We may determine how "spread out" the values in a data collection are by looking at the mean absolute deviation.
The steps to find mean absolute deviation are:
- Calculate the mean of the data set
- Calculate the value of distance between the mean and each point in the data set.
- Find the average of the distances from the mean.
Hence, The next step Nolan should take is to find the average of the distances from the mean.
Learn more about mean on:
brainly.com/question/1136789
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Answer:
826.8 hours
Step-by-step explanation:
Given data
Lenght of video= 234minutes
number of times watched= 212 times
Based on the information given, we can estimate the number of hours spent watching the video
=234*212
=49608 minutes
in hours
=49608/60
=826.8 hours
in days
=826.8/24
=34.45 days
Solution
For this case we can take square root in both sides and we have:
![3x-5=\pm\sqrt[]{19}](https://tex.z-dn.net/?f=3x-5%3D%5Cpm%5Csqrt%5B%5D%7B19%7D)
And solving for x we got:
![x=\frac{5\pm\sqrt[]{19}}{3}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%5Cpm%5Csqrt%5B%5D%7B19%7D%7D%7B3%7D)
then the solutions for this case are:
B and E
