15 ! ! solve with exact numbers instead of just converting denominator/s. at a track meet, jacob and daniel complete in the 220 m hurdles. daniel finishes in 3/4 of a minute. jacob finishes with 5/12 of a minute remaining. who ran the race in the faster time? bonus: express the difference in their time as a fraction of a minute.

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

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)