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AleksandrR [38]
3 years ago
8

I'll give brainliest to whoever answers. 20 POINTS!!!

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
5 0

Answer:

A

Step-by-step explanation:

kaheart [24]3 years ago
4 0

Answer:

A is your answer

Step-by-step explanation:

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In the accompanying diagram, PA is tangent to the circle at A and PC is a secant. If
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Answer:

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Step-by-step explanation:

PA² = (BC + PB) × PB => tangent-secant theorem

PA = 8

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Substitute

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64 = 4BC + 16

64 - 16 = 4BC + 16 - 16

48 = 4BC

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12 = BC

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2 years ago
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andreyandreev [35.5K]

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have

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Substitute

\dfrac{-4-6}{5-r}=\dfrac{5}{7}\\\\\dfrac{-10}{5-r}=\dfrac{5}{7}\qquad|\text{cross multiply}\\\\5(5-r)=(-10)(7)\qquad|\text{use distributive property}\\\\25-5r=-70\qquad|-25\\\\-5r=-95\qquad|:(-5)\\\\\boxed{r=19}

4 0
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barxatty [35]

Answer:

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