Which equation below has infinite solutions? A) 2x + 5 = 2x + 8
B) 5x – 1= 2x + 4
C) x + 9 = x + 9
D) 4x 1 = 6x + 2

it b

Step-by-step explanation:

because 5x and 2x is going to take longer to figure out

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i dont know

step-by-step explanation:

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