What is negative sixty-four divided by four time the difference of two and negative six

Find the value of x. round the length to the nearest tenth

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

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|