4x -3 = -39

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x = -9

Step-by-step explanation:

Plus 3 to the -39 since you want to cancel the -3 out. Then divide -36/4, so the answer will be x = -9.

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step-by-step explanation:

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.