No, you cannot. You must need to go back to 4th grade.
Yes 13 is prime because the factors are 1 and 13. That's it.
This is a calculator website, but 76*79 = 6004
(x)*(0.8-0.06)+0.06=0.069 = x=(9/740)
I would try Wolfram Alpha. It's a very good calculator.
(x-16)^2=15 = {x=16-sqrt(15), x=sqrt(15)+16}, or either: 12.13 or 19.87
Baiscally, this equation is 16+(16-4)+(16-8)+(16-12)
Simplify.
16+12+8+4
simplify.
28+12
Simplify
40.
cos means cosine. cosine is the ratio between the adjacent side to an angle and the hypotenuse. (For a right triangle)
I believe 10! ways, or 3628800 ways, minus a little bit because one team can't win all of the medals.