Aboat moves 15.0 km across a lake in 30.0 min. what was the average speed of the boat in kilometers per hours? a.15.0 km/h. b.30.0 km/h. c.7.50 km/h. d. none of the above.

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

Three times the sum of a number and seven is negative thirty-six. what is the number?

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?