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C. Triangle 1 and triangle 3.

Step-by-step explanation: They both have the same ft on each side. Triangle 1 and triangle 2 looks the most similar but, that's not an option. So it is triangle 1 and triangle 3.

I hope this helps you!

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

the f

last graph i believe

step-by-step explanation:

worked it out i believe