Fran's second bowling score was 72 points less than twice her first score. if her second score
was 156, what is fran's first score?

240

Step-by-step explanation:

Multiply 156 by 2, getting 312. Then subtract 72 from 312 getting 240

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

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!