Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviation of 50. Katlyn's math score is in the 92nd percentile. What is her math score, rounded to the nearest whole number?
Find the z-table here
554
561
568
578

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

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?

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?