The combined age of three relatives is 120 years. james is three times the age of dan, and paul is two times the sum of the ages of james and dan. how old is each person?

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?

What is the range for 31,39,29,34,37,24,36,33,34,28

Describe a situation that you could represent with the inequality x< 17