You are dealt four cards successively (without replacement ) from a shuffled deck of 52 playing cards. Find the probability that all cards are black. find the indicated probability. Express your answer as a simplified fraction unless otherwise noted.

What are potential hypotheses (explanations) regarding why there are ecological equivalents between many metatherians and eutherians? discuss your hypothesis in terms of the processes that could lead to the current ecologies and distributions of metatherians and eutherians.

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

How do you solve this step by step?