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snow_tiger [21]
3 years ago
12

5. Let us apply the formula to some numbers. The following are the durations in minutes of a series of telephone calls. You want

to know the mean duration of the calls.
µ ═ ∑ X
n

Duration of calls: 12.3, 18.2, 33.1, 9.1, 7.3, 10.4, 11.5, 4.5, 8.9, 3.3
Mathematics
1 answer:
UkoKoshka [18]3 years ago
4 0

Answer: The mean is 11.86

Step-by-step explanation:

Add all the numbers and divide by however many numbers there are. In this case there are 10 numbers

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Svet_ta [14]
There are certain rules to follow when rotating a point 90 deg clockwise. Since it is given that ABCD is a parallelogram and the coordinates of point C are given, we just have to follow this simple relation:

R(90 deg) : (X,Y) ---> (-Y,X)

Using the given coordinates:
R(90 deg<span>) : (-4,1) ---> (-1,-4)
</span>
Therefore, Point C' will be located at (-1,-4)
6 0
3 years ago
1) 3х • 3х<br> Can someone help please I don’t get this shiii
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5 0
3 years ago
What is the sum of -8 and it’s opposite?
musickatia [10]

Answer:

5+-8=0

Step-by-step explanation:

Its really easy, first, it says sum, so that means add it and then it said opposite. The opposite of -8 is 8, so put it all together and its 8+-8=0

4 0
3 years ago
What is the median of the following set? 28, 45, 12, 34, 36, 45, 19, 20
amm1812

Answer:

its 31

Step-by-step explanation:

because there are 2 medians you have to find the average so you add them and divide by 2.

5 0
3 years ago
Use substitution to solve the system of linear equations. In your final answer, include all of your work.
JulijaS [17]
<span>y = -3x + 4
x + 1/3y = 4/3

Substitute the first expression into the second equation for y:

</span>x + 1/3(-3x + 4) = 4/3
x - x + 4/3 = 4/3
4/3 = 4/3

Answer;
All real numbers are solutions.

Hope this helps.
5 0
3 years ago
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