Is there more to your question than this? Add to this post if so....
3x + 8x = 11x
21/5 = 4 1/5 = 4.2
I only have a partial knowledge of such things. LOL
5.5 x 10^3 ( I added the '3') x 20 = 110 x 10^3 = 1.10 x 10^5 sq mi (Nevada size)
(-2h^3y)^2 = (-2)^2 (h^3)^2 (y^2) = 4 h^6 y^2
Example 848 mod 28 will give the answer '8' which is the remainder after division...
First enter 848
then the '2nd' key
then the 'mod' key (which WAS the division key)
then '28' then '='
If the dragon DOUBLES in size each day.....the day prior it is 1/2 size
full cave = 20 days previous day it was 1/2 size of the cave so answer is 19 days to fill 1/2 cave
Here is my stab at it:
1- Qc/Qh =~ 1 - 288/830 = .653 or 65.3 % effeicient (the Carnot effic = (Th-Tc)/Th )
65.3/100 = 230000/x
x = 353846 j input needed
309 mod 16 = 5 so 11 more movies would be required for a total of 320 movies( so there will be no remainders after division by 16 shelves (20 movies per shelf) )
848 mod 28 = 8