Use the pythagorean theorem to find the measure of the hypotenuse of right triangle of the measures of the legs are 30 meters and 72 meters

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?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Twelve less than a number is at most 20