A company found that an experience surveyor can survey a roadbed in 6 hours. An apprentice surveyor needs 11 hours to survey the same stretch of road. If the two work together, find how long it takes them to complete the job.

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out