Julieta dispone de listones verdes de 45 listones rojos, 70 listones azules de 20 cm si requiere cortarlos en trozos iguales de mayor longitud. ¿De cuánto tienen que medir los listones si no quiere desperdiciar material?
¿Cuántos trozos de cada color hará?

Javier va a tasco cada 18 días, Hector cada 24 días el 2 de noviembre se encontraron en dicha ciudad, dentro de cuántos días volverán a coincidir en tasco y en qué fecha?

the answer is d. (1.2, -4.7) on edgn

hope this !

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

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