Shalika bought a purse for $120.the tax rate is 9%. what is the total amount shalika paid

Step-by-step explanation:

100%     = 120

1%= 120/100=   1.2

9%  = 1.2 x 9=    10.8

10.80 to the 120 to get $130.80

The amount of the purse is, $120.

Tax rate =9%

First find the the total tax she paid on the amount is equal to the 9% of $120 i.e,

Now,

Total amount paid by Shalika = $120 +$10.8 = $130.8

geometry: triangles

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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