Answer:
7.16
Step-by-step explanation:
60x+80=100x combine like terms
80=100x-60x or 40x divide to get x by itself
80/40=40x/40
20=x
after 20 hrs
Using it's concept, it is found that the mean absolute deviation of 2.8 means that the heights differ from the mean by an average of 2.8 inches.
<h3>What is the mean absolute deviation of a data-set?</h3>
- The mean of a data-set is given by the sum of all observations divided by the number of observations.
- The mean absolute deviation of a data-set is the sum of the absolute value of the difference between each observation and the mean, divided by the number of observations.
- The mean absolute deviation represents the average by which the values differ from the mean.
In this problem, the mean is given by:
M = (65 + 58 + 64 + 61 + 67)/5 = 63.
Hence the mean absolute deviation is given by:
MAD = (|65-63| + |58-63| + |64-63| + |61-63| + |67-63|)/5 = 14/5 = 2.8.
The mean absolute deviation of 2.8 means that the heights differ from the mean by an average of 2.8 inches.
More can be learned about mean absolute deviation at brainly.com/question/3250070
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Answer:
38
Step-by-step explanation:
the 38 is the hundredths because it's over 100
Answer:
0.7176 m/s m/s
Step-by-step explanation:
We are given;
Rate = 3 rev/min
Diameter: d = 15 ft
Now, we want to find how fast the stream is flowing which is the linear velocity.
Thus;
linear velocity = circumferential distance × number of revolutions
Now, circumferential distance = πd
Circumferential distance = 15π
Thus;
linear velocity = 15 × π × 3 = 45π ft/min
Converting to m/s gives;
Linear velocity = 45π/197 m/s
Linear velocity = 0.7176 m/s
