Amy usually swims 20 laps in 30 minutes. What is her rate in laps per
minute?

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft