Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. It takes Amy 40 minutes
to arrive at school. Bill arrives 20 minutes after Amy. How much
faster (in meters/second) is Amy's average speed for the entire
trip?
A. 0.12 km/min
B. 0.25 km/min
C. 1 km/min
D. 25 km/min

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with