An airplane leaves atlanta at 2 pm and flies north at 250 miles per hour. a second airplane leaves atlanta 30 minutes later and flies north at 280 miles per hour. at what time will the second airplane overtake the first?
answer choices 0.7639 0.75 0.8 0.7847 0.7986

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

Which pair of numbers is relatively prime? a. 105 and 128 b. 130 and 273 c. 205 and 350 d. 273 and 333

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)