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Elena L [17]
2 years ago
15

If a triangle has a 50 degree angle and a 68 degree angle, how many degrees is the third angle

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
4 0
Triangles angles always add up to be 180 degrees
So far you have 110 out of 180
180-110=770
The 3rd angle is 70 degrees
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Answer:

vertex = (- 5, - 8)

Step-by-step explanation:

Given a quadratic in standard form : ax² + bx + c = 0 : a ≠ 0

Then the x- coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

Given x² + 10x = - 17 ( add 17 to both sides )

x² + 10x + 17 = 0 ← in standard form

with a = 1, b = 10, c = 17, then

x_{vertex} = - \frac{10}{2} = - 5

Substitute x = - 5 into the quadratic for the corresponding value of y

y = (- 5)² + 10(- 5) + 17 = 25 - 50 + 17 = - 8

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Step-by-step explanation:

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5x-10x+ 2(3y-2)= 10y-5x + 4

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Divide -4y and 8 by -4 to get y by itself and -2

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Answer

Hope this helps
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Step-by-step explanation:

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