Bryan is baking cookies for Zachary's birthday party. Bryan uses 1 cups
of flour for every 10 cookies. If Bryan needs to make 50 cookies, and he
has 4 cups of flour, how much more flour will Bryan need to finish baking?

1 more cup

Step-by-step explanation:

1:10

x:50

10*5=50

1*5=5

5-4=1

1 more cup

geometry: triangles

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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