Testing for a disease can be made more efficient by combining samples. if the samples from five people are combined and the mixture tests negative, then all fiveall five samples are negative. on the other hand, one positive sample will always testpositive, no matter how many negative samples it is mixed with. assuming the probability of a single sample testing positive is 0.2, find the probability of a positive result for ffive samples combined into one mixture. is the probability low enough so that further testing of the individual samples is rarely necessary? the probability of a positive test result is?

Can some one me with this math problem?

Which number line represents the solution set for the inequality -1/2x> 24?

The school track has eight lanes. each lane is 1.25 meters wide. the arc at each end of the track is 180. the distance of the home straight and the radii for the arcs in the 1st 4 lanes are given. s=85m r1=36.5m r2=37.75m r3=39m r4=40.25m part one: find the radii of lanes 5 through 8 of the track. show your work. part two: if max ran around lane one, how far did he run? show your work and explain your solution. part three: max wants to run a total of three laps around the track, choose two additional lanes (2-8) for him to run and find the distance around those two lanes. show your work and round to the hundredths. part 4: based on your lane choices in part three, what was the total distance max ran in the three laps around the track?