How can I make the columns add numbers together and create a solution?
By selecting the cells that you wish to combine and typing =sum into the cell, excel will automatically produce the answer.
If a is 7 and b is 8. Using the pythagorean theorem, how would you find c?
The pythagorean theorem is a^2 + b^2 = c2. 7 squared = 49 and 8 squared = 64. 49 + 64= 113. C = the square root of 113.
What is 1/2 + 2/3?
Convert the numbers to have the same denominator. 1/2 becomes 3/6 and 2/3 becomes 4/6. The answer would be 7/6.