What 375/1000 as a unreduced fraction how do u get it?

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.