Ella stacks two boards under a table to make it level. one board is 78 inch thick. the other board is 512 inch thick. which equation most closely estimates the thickness of the two boards?

b

step-by-step explanation:

the word superfluous means unnecessary

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

answer: im gonna go with milli

step-by-step explanation:

d is the only accurate one

step-by-step explanation: