Write the following comparison as a ratio reduced to lowest terms. 114 hours to 13 days

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Which letters from the table represent like terms? a and b b and c a and d b and d

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?