The measure of each base angle of an isosceles triangle is 15° less than the measure of the vertex angle. find the degree measure of the vertex angle

What two consecutive odd integers have a sum of -28

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

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?