Determine the values of c so that the following functions represent joint probability distributions of the random variables X and Y : (a) f(x, y)=cxy, forx =1 ,2,3; y =1 ,2,3; (b) f(x, y)=c|x−y|, forx = −2,0,2; y = −2,3.

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?