A person cando a job in 6 days. Another cando the same job in 4 days. If they work together,
how long do they need to finish the job?

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

Which of the following three dimensional figures has a circle as it’s base

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet