Is the number 4. rational or irrational?

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

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

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet