Help me lol !! will give brainleist

Mathematics

2 answers:

Naddika [18.5K]3 years ago

5 0

Answer:

50+2x+(3x-10)=180

From there we do prealgebra

then x=28

katovenus [111]3 years ago

3 0

Answer:

Step-by-step explanation:

Since, Sum of triangle is equal to 180°

180 = 2x + 50 + 3x - 10

180 = 5x + 40

180 - 40 = 5x

140 = 5x

140/5 = x

28 = x

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<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20-11x%3D-28" id="TexFormula1" title="x^{2} -11x=-28" alt="x^{2} -11x=-28" align="

amid [387]

Answer:

x = 4, 7

Step-by-step explanation:

We start off with the equation $x^{2} -11x = -28$ . from there, we can add 28 to both sides to get $x^{2} -11x+28 = 0$ . From there, we have to factor the equation. In order to factor it, we have to ask ourselves what 2 numbers would add up to -11 and multiply to 28? In this case, the answer would be -7 and -4. So, we get the equation (x-7)(x-4) = 0. Then, we set each part of the equation = 0 to get the anwsers x = 4 and 7. Hope this helps!