Word problem with multiple decimal operations: problem type 2
rafael bought 2 cds that were each the same price. including sales tax, he paid a total of $24.60. of that total, $1.80 was tax. what was the price of each cd
before tax?

$11.40

Step-by-step explanation:

$24.60 minus $1.80 equals $22.80. $22.80 divided by 2 equals $11.40. So the price of each CD before tax is $11.40

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

i dont know men

step-by-step explanation: