Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 p. m. on a weekday. Use the sample data to construct 99% confidence interval estimate of the population standard deviation.
62 65 65 56 65 55 61 60 61 70 60 66

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?

Using the figure below, select the two pairs of alternate interior angles.a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7

Write a similarity statement for the similar triangles. afgh ~ a