The horizontal distance between two towers is 140m. The angle of depression of the top of the first tower when seen from the top of the second tower is 30˚. If the height of the first tower is 60m, find the height of the second tower.

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

In chemistry,n molecules of an ideal gas have pressure, volume, and tempersture that stand inthe following relation, where r is constant. solve the equation for n,the number of molecules. pv=nrt