Enrico did a geometry investigation using a drawing application on a computer. He drew triangle DEF then moved it to produce triangle D'E'F' as shown below. He measured the sides and found that DE=D'E', EF=E'F' and DF=D'F'. Which is the best conclusion to draw from Enrico's geometry investigation?

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

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 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2