There are two soccer balls and 6 footballs. What is the ratio of soccer balls and footballs. a: 1:3 b: 2:4 c: 3:4 d: 4:2 PLEASE ANSWER

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

What is 617.3 miles and each gallon of gas the car can travel 41 miles select a reasonable estimate of the number of gallons of gas karl used.

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)