Owners of a radio station want to obtain information on the online radio listening habits in Spain. The station sends a survey out to those listeners with email addresses. Which of the following sampling designs best represents the type of survey design described?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)

Given right triangle abc, what is the value of tan(a)?