Pls help The center of an airplane propeller is 13 feet off the ground and the radius of the propeller is 3 feet. The B blades of the propeller are set at pi/6, 5pi/6, and 3pi/2 radians from 0 radians directly to the right of the center of the propeller.

What is the height of the the tip of each propeller in this situation

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?

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Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?