Which of the following best describes the algebraic expression x/3-15?
a. a number divided by three minus fifteen.
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b. three divided by a number minus fifteen.
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c. a number divided by three less than fifteen.
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d. three divided by a number less than fifteen.

answer:     true

step-by-step explanation:

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 i put something wrong your not gonna like it so rather not say nothing.