Find the distance between r(-1, 1) and s(-4, -5) to the nearest tenth

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?