Ethan was able to run a lap on the quarter mile track in 90 seconds. He wants to know how long it would take him to run a 5K race, which is 3.1 miles. 1 - How many times longer than the quarter mile is a 5K? 2 - If Ethan maintains his pace (speed) for the full distance, how long would it take him to complete the race?

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.