Humans usually have 20 baby teeth, which are replaced by 32 adult teeth. Raul said he has lost 6 of his baby teeth. Write two fractions equivalent to this number. Explain your answer.

The question is not very clear, since the most logical thing is to think that the fraction is with respect to the number of baby teeth, if so:

6/20 and 3/10, these would be the two fractions.

But the literal question is to express the number 6, as a fraction.

We can do it by multiplying and dividing by the same number, for example:

6 * 2/2 = 12/2

6 * 10/10 = 60/10

This would be the two fractions.

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