The blue lake trail is 11 3/8 miles long gemma has hiked 2 1/2 miles each hour for three hours how far is she from the end of the trail

Gemma is 3 7/8 miles from the end of trail.

Step-by-step explanation:

Given that,

length of blue lake trail = 11 3/8miles

time Gemma has hiked = 3 hours

distance Gemma have travelled in a hour = 2 1/2

Total distance Gemma have travelled = 2 1/2 * 3

                                                               = (2*2+1)/2 *3

                                                               = (5/2) * 3

                                                               = 15/2

                                                               = 7 1/2miles

= 91/8 - 15/2

= 91/8 - 15*4/2*4

= 91/8 - 60/8

= (91-60) /8

= 31/8 miles

= 3 7/8 miles

its c or d   take a lucky guess my dude

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