10 teams enter a soccer tournament. In the first round teams paired in 5 pairs to play with each other. Assume that now in each match one of the teams is marked as "HOME" and the other "AWAY" and first 5 games need to run one after another. How many different pairings are possible to create? I know this has already been answered but that answer was wrong.

Y=4x^2+x-1 solve using quadratic formula

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.