Find the vertices and foci of the hyperbola. y2 − x2 = 16 vertices (x, y) = (smaller y-value) (x, y) = (larger y-value) foci (x, y) = (smaller y-value) (x, y) = (larger y-value) find the asymptotes of the hyperbola. (enter your answers as a comma-separated list of equations.)

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

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The table showed price paid per concert ticket on a popular online auction site. what was the average price paid per ticket