Basic Math Examples

Find the Mean 83 , 97 , 85 , 84 , 96 , 80 , 80 , 87 , 91
83 , 97 , 85 , 84 , 96 , 80 , 80 , 87 , 91
Step 1
The mean of a set of numbers is the sum divided by the number of terms.
83+97+85+84+96+80+80+87+919
Step 2
Simplify the numerator.
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Step 2.1
Add 83 and 97.
180+85+84+96+80+80+87+919
Step 2.2
Add 180 and 85.
265+84+96+80+80+87+919
Step 2.3
Add 265 and 84.
349+96+80+80+87+919
Step 2.4
Add 349 and 96.
445+80+80+87+919
Step 2.5
Add 445 and 80.
525+80+87+919
Step 2.6
Add 525 and 80.
605+87+919
Step 2.7
Add 605 and 87.
692+919
Step 2.8
Add 692 and 91.
7839
7839
Step 3
Divide 783 by 9.
87
 [x2  12  π  xdx ]