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Cloud [144]
2 years ago
15

The sum of the roots of x² + 6x - 55 = 0 is: A. 6 B. -6 C. -55

Mathematics
1 answer:
lana66690 [7]2 years ago
4 0

Answer:

B

Step-by-step explanation:

the sum of the roots = - \frac{b}{a}

x² + 6x - 55 = 0

with a = 1 , b = 6 , then

sum of roots = - \frac{6}{1} = - 6

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Formula to find the arc length is:

s=\frac{\theta}{360} 2\pi r

Where, s= arc length,

r = radius of the circle

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According to the given problem, \theta= 150 and r =2.4.

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s=\frac{150}{360} *2\pi *2.4

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Answer:

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Step-by-step explanation:

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