Heather spent part of her Labor Day getting the last of her school supplies. She purchased the following:

one box of 216 tissues for $1.29
one calculator for $7.99
five 3-subject notebooks for $.69 each
one 10-pack of blue pens for $.99
one dozen No. 2 pencils for $1.09
one 5-pack of colored pens for $2.49
two 150-sheet packs of loose-leaf paper for $.99 each
one 3-ring binder for $1.99
one glue stick for $.44
Help Heather calculate her total bill, keeping in mind that she must pay 5% sales tax.

Your short answer should state the total using a complete sentence. Be sure your explanation includes how to calculate 5% tax.

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

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

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.