Cos(22/7 r)=2cos(22/7 r)
Find the value of r for 0>r<3

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers

Typically, a cover letter should be no longer than