The answer to the question
Just divide 18 by 20 , so its 0.9
The indicated sum is 350. The answer is 350 because the E or sigma is making you do (6j+2) ten times. Every time you do 6j+2 you start with j as 1 and add a 1 to j for every time you add. For example, [6(1)+2]+[6(2)+2]+[6(3)+2]...[6(10)+2].
Hope this helps.
Plug into calculator...
solve(2(-y+1)-3y=-30,y)
y=6.4
It would have to be rounded down
8.0349999999999........ is the greatest one
because the 4 rounds down, and every 9 after that doesn't affect the rounding, but it does add a small amount to the number
the number is less than 8.035
8.0349999999999........
