A rectangle has side lengths (7.5a-1.5b) cm, (3.5a+4.5c) cm. and (6.5c+2a) cm, and (8.5b-6.5c). which expression represents the perimeter, in centimeters, of the rectangle?​

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day

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

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce