Students were asked to write 6x5 + 8x - 3x + 7x7 in standard form.
shown below are four student responses.
anne: 78 & gr 313 + 8r.
bob 313 + 6 + 7 + 8r
carrie: 8x + 77 +6" - 33
dylan: sr - 33 + 6x5 + 7x7
which student is correct?
(1) anne
(9) bob
(3) carrie
(4) dylan

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

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm

cool stunts are flippin i think

sitting on a chair

and using stick feet