I learned this earlier in the year and never was good at it, but i have to retake this assignment. Here is he first problem (: I am expected to show my work.
The sides of a triangle have measures of x, x, and y, and the perimeter of the triangle is 46. The measure y is 4 centimeters longer than the measure x. Write two equations which represent the two sentences.
Solve the system you wrote for this using any technique.

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- anonymous

x+x+y = 46
y=4+x

- anonymous

plugging y = 4+x in eqn 1,
x+x+4+x = 46
3x=42
x=14
hence y=4+x = 4+14=18

- anonymous

Thanks buddyyyy (:

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- anonymous

Why is this stated as "the measure y is 4 cm longer than the measure x?" Why not "y is 4 cm longer than x?"

- anonymous

I have no idea i only copied and pasted ^_^

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