Mean: To find the mean you add all the numbers up and divide by the total number of factors.
12+10+10+13+18+9 = 72
72/6 = 12
Mode: To find the mode, we need to find the number that reoccurs the most in the sequence.
In this case it is 10 because it occurs twice, while the other factors occur once!
Median: To find median we need to arrange the numbers in numerical order. We then cross off one from each side until we come to the middle interger. If it comes between two numbers, you use the half way point between those two numbers.
9 10 10 12 13 18
In this case, we get left with 10 and 12. Meaning that our median is 11!
47 + 30 = 77
hope this helps
The missing number for the subtraction of matrices is 4.
<h3>
How to subtract the matrices?</h3>
The subtraction of two matrices of the same size is really direct. You just need to subtract the elements that are in the same position, then:
![A = \left[\begin{array}{ccc}a_{11}&a_{12}\\a_{21}&a_{22}\end{array}\right] \\\\B = \left[\begin{array}{ccc}b_{11}&b_{12}\\b_{21}&b_{22}\end{array}\right]\\\\A - B = \left[\begin{array}{ccc}a_{11} - b_{11}&a_{12}-b_{12}\\a_{21} - b_{21}&a_{22}-b_{22}\end{array}\right]](https://tex.z-dn.net/?f=A%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da_%7B11%7D%26a_%7B12%7D%5C%5Ca_%7B21%7D%26a_%7B22%7D%5Cend%7Barray%7D%5Cright%5D%20%5C%5C%5C%5CB%20%3D%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Db_%7B11%7D%26b_%7B12%7D%5C%5Cb_%7B21%7D%26b_%7B22%7D%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5CA%20-%20B%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da_%7B11%7D%20-%20b_%7B11%7D%26a_%7B12%7D-b_%7B12%7D%5C%5Ca_%7B21%7D%20-%20b_%7B21%7D%26a_%7B22%7D-b_%7B22%7D%5Cend%7Barray%7D%5Cright%5D)
Then the missing therm will just be equal to the difference between the last two elements of each matrix:
-2 - (-6) = -2 + 6 = 4
The missing number is 4.
If you want to learn more about matrices:
brainly.com/question/11989522
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Jan Quint earned $542.5 last week.
If she worked 40 regular hours than we must multiply 40 by 7.
40 * $7.00 = $280
Now we need to find how much she earned for her 9 hours of overtime. For overtime she gets paid her normal pay plus half of her normal pay. So $7 + $3.5 = $10.5 So for each hour of overtime she gets paid $10.5
9 * $10.5 = $94.5
Next we need to find out how much she earned for her 12 hours of holiday time. She gets paid double for holiday time which is $7*2 = $14. So for each hour of holiday time she gets paid $14
12 * $14 = $168
Lastly we need to add all those earnings together to find out how much she earned that whole week with verything included.
$280 + $94.5 + $168 = $542.5
3 horses would weigh 6 tons but if you need it in pounds it would be 12000 lbs
