a tree 50m tall at a right angle casts a shadow of 16m. calculate the angle at the top of the tree from the furthest edge of the shadow​

Find the area of a parallelogram with base 15 yards and height 21 2/3

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

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%