It takes Lucy 20 minutes to bike to the pool and 3 1/2 minutes per lap to swim in pool. It takes Dan 30 minutes to jog to the pool and 2 3/4 minutes per lap to swim in the pool. Write an inequality that will represent how many
laps Lucy must swim in order for her to spend the same number or more minutes exercising than Dan.

51-50

step-by-step explanation:

deez nu tz

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584