Lindsay is 5 years younger than Mark. Seven years ago, the sum of their ages was I. Let l be Lindsay's age and let m be Mark's age.

What are potential hypotheses (explanations) regarding why there are ecological equivalents between many metatherians and eutherians? discuss your hypothesis in terms of the processes that could lead to the current ecologies and distributions of metatherians and eutherians.

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles