Answer:
are you looking for a mixed number if so its 2 4/5
Step-by-step explanation:
Answer:
190.08
Step-by-step explanation:
The modal class is 70 - 80 and the mean speed is 66.4
<h3>How to determine the modal class?</h3>
The table of values is given as:
Speed Frequency
40 - 50 10
50 - 60 16
60 - 70 19
70 - 80 23
80 - 90 12
The modal class is the class with the highest frequency
The class 70 - 80 has the highest frequency of 23
Hence, the modal class is 70 - 80
<h3>How to determine the mean?</h3>
Rewrite the frequency table to include the class midpoints
x f
45 10
55 16
65 19
75 23
85 12
The estimate of the mean speed is then calculated as:
So, we have:
Evaluate
Hence, the mean speed is 66.4
Read more about mean and mode at:
brainly.com/question/14532771
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Answer:
x = -31
Explanation:
To get the value of x, we will need to isolate the x on one side of the equation.
This can be done as follows:
5(x-4) + 2 = -173
1- get rid of the brackets:
5x - 5(4) + 2 = -173
5x - 20 + 2 = -173
2- Combine like terms:
5x - 20 + 2 = -173
5x - 18 = -173
5x = -173 + 18
5x = -155
3- Get rid of the coefficient of the x:
5x = -155
x = -155/5
x = -31
Hope this helps :)
Answer:
-16
Step-by-step explanation:
You start with -8 and then subtract another 8.
Or, put differently, you start with -8 and then add -8.
But that's the same thing.
So a + -b is a - b.