Which shows how to solve the equation Negative four-fifths x = 80 for x in one step?
Negative four-fifths (Five-fourths) x = 80 (five-fourths)
Negative four-fifths (Negative five-fourths) x = 80 (negative five-fourths)
Negative four-fifths (negative 5) x = 80 (negative 5)
Negative four-fifths (5) x = 80 (5)

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 is b

step-by-step explanation:

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.