The length of a rectangle is twice the width. If the perimeter
of the rectangle is 60 units, find
the dimensions of the rectangle.

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

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?

36x2 + 49y2 = 1,764 the foci are located at: a) (-√13, 0) and (√13,0) b) (0, -√13) and (0,√13) c) (-1, 0) and (1, 0)