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SIZIF [17.4K]
3 years ago
15

Please help this is the last question!!!!

Mathematics
2 answers:
Butoxors [25]3 years ago
5 0

Answer:

B

Angle A: 18.6°

Angle B: 55.8°

Angle C: 105.6°

x = 18.6

Step-by-step explanation:

adelina 88 [10]3 years ago
3 0

Answer:

B

the measure of angle A: 18.6°

measure of angle B: 55.8°

measure of angle C: 105.6°

Step-by-step explanation:

6x - 6 + 3x + x = 180

10x - 6 = 180

10x (- 6 + 6) = 180 + 6

10x = 186

10x/10 = 186/10

x = 18.6

18.6 + 3(18.6) + [6(18.6) - 6] = 180

18.6 + 55.8 + 105.6 = 180

180 = 180

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yarga [219]
This is a quadratic equation with a general equation of ax^2 + bx + c.
The quadratic formula can help to get the roots of the equation. We know the highest degree of that equation is 2; so there will be also two roots.
The quadratic formula is
x = [-b ± √(b^2 - 4ac)] / 2a

With a = 1, b = 7, c = 2,
x = {-7 ± √[(7)^2 - 4(1)(2)]} / 2(1) = (-7 ± √41) / 2

So the two roots are
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This is also another way of factorizing the equation
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3 years ago
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Answer:

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3 0
3 years ago
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