Name all of the sets to which the real number 78 belongs.
Diagram of overlapping ovals. The largest oval is titled rational. It contains the fractions two-fifths and one-third. The next biggest oval is titled integers. It contains the numbers negative seven and negative one. The next largest oval is titled whole. It contains the number zero. The smallest oval is titled natural. It contains the numbers 1, 2, 3, 4, and 5.

Need on this geometry question. explain how you did it.

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?

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?