URGENT: Ann is twice as old as Jim was two years ago. The difference in their present ages is 10. Find both ages now. (Please show an equation and a key)

What is the solution set of the quadratic inequality x^2-5< or equal to 0

1- 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.2- 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 the first question?

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?