the train and roller coaster will arrive back at their stations at the same time. if the train had a .15 mile head start and is traveling at the speed of .65 miles per minute, and the roller coaster is traveling at an average speed of .78 miles per minute, how long before they both arrive at the station?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

Question 4 of 10 2 points what is the second part of the process of investigating a question using data? a. rephrasing the question o b. describing the data c. collecting the data o d. making an inference submit