Aprize bag contains four country music cds, eight pop music cds, and five classic rock cds. what is the probability of pulling out a classic rock cd and then, without replacing it, pulling out a country music cd? express your answer in decimal form, rounded to the nearest hundredth.

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?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Polynomial that can be factored as (3x-4)(3x+4)