A hot air balloon has traveled a horizontal distance that can be represented by the vector <3000,0> and a vertical distance that can be represented by the vector <0,500>, where the magnitude of both vectors is measured in feet. Hat is the magnitude of the distance the balloon has traveled?

What is a rational number between 9.5 and 9.7

Which expression is the factorization of x^2+10+21

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)