Dados os conjuntos a={0,2,4,6,8} e b={1,3,5,7,9}, use o simbolo E ou E/ para relacionar: A) 6 e A ( ) B) 6 e B ( ) C) 4 e A ( ) D) 4 e B ( ) E) 7 e A ( ) F) 5 e B ( )

kjgfcvbjkl

step-by-step explanation:

sdfghjkl; vbnm,

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