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3 years ago

The perimeter of a triangle is 6x. One side is x+3 and another side is 2x+4. What is the length of the 3rd side?

1 answer:

6 0

Let y = the length of the 3rd side
x+3 + 2x+4 + y = 6x
x + 2x + 3 + 4 + y = 6x
3x + 7 +y = 6x
7 + y = 3x
y = 3x - 7
The length of the third side in terms of x is 3x-7

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Step-by-step explanation:

the slope-intercept form is y = ax+b

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Answer: $\boxed{\bold{-14x+8}}$

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Explanation: $\downarrow\downarrow\downarrow$

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$\bold{x^2-9x+2+4x^2-5x+1-\left(5x^2-5\right)}$

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[ Step Three ] Rewrite Equation

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[ Step Four ] Simplify $\bold{x^2-9x+2+4x^2-5x+1-5x^2+5}$

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