Amusic download service charges a flat fee each month and $0.99 per download. the total cost for downloading 27 songs this month is $42.72. how much is the flat fee ok, here is my question; what do you do to get the answer for this? and if so, what is the equation

so you need to take   $0.99 times $42.72

hope this helps!!

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

2

step-by-step explanation: