$200
They first took $100 then came back and bought $70 worth of merchandise and paid with the 100 dollars they stole, in turn you gave them change of 30 dollars. So you are now short $130 in the register and 70 in merchandise for a total of $200.
Answer:
2.4
Step-by-step explanation:
We have to find the mean first

Now we have to find deviations.
Note that the deviations are calculated by subtracting the mean from the value. The distance is always positive so the deviations will be positive
Value Deviation
2 2-4.5 = |-2.5| = 2.5
4 4-4.5 = |-0.5| = 0.5
7 7-4.5 = 2.5
2 2-4.5 = |-2.5| = 2.5
3 3-4.5 = |-1.5| = 1.5
7 7-4.5 = 2.5
9 9-4.5 = 4.5
3 3-4.5 = |-1.5| = 1.5
1 1-4.5 = |-3.5| = 3.5
7 7-4.5 = 2.5
The last step is to find the mean of deviations.

The mean absolute deviation of given data set is 2.4 ..
55 because I searched it up
Answer:
520
Step-by-step explanation:
Past number of pupils: p
Increase of 57% = 1.57
Present number of pupils = 817
p x 1.57 = 817
p = 817 divided by 1.57 = 520.382
rounded to the nearest whole number = 520 (this is why the question says "about" how many...)
Answer:
567
Step-by-step explanation:
it got it wrong and then it told me the right anser