The length of a rectangular is 4 meters less than twice the width. if the area of the rectangle is 240 square meters, find the dimensions

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Suppose you have 10 skittles. 5 green and 5 red. you choose 4 without looking. what is the probability that all 4 skittles will be green?

Ne height of zak is 1.86 metres. the height of fred is 1.6 metres. write the height of zak as a fraction of the height of fred. give your answer in its simplest form.