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AlladinOne [14]
3 years ago
14

Solve x 2 + 6x - 5 = 0 by completing the square. Which equation is used in the process?

Mathematics
1 answer:
ella [17]3 years ago
8 0

x ^2 + 6x - 5 = 0\\\\ x^2+6x+9-14=0\\\\ (x+3)^2=14\\\\ x+3=\sqrt{14} \vee x+3=-\sqrt{14}\\\\ x=-3+\sqrt{14} \vee x=-3-\sqrt{14}

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Answer:

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Step-by-step explanation:

We are given;

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We will solve this by using Bayes’ formula for inverting conditional probabilities:

Thus;

P(car is blue | witness said blue) =

[P(witness said blue | car is blue) × P(car is blue)] / [(P(witness said blue | car is blue) × P(car is blue)) + (P(witness said blue | car is green) × P(car is green))]

Plugging in the relevant values gives;

(0.99 × 0.01)/((0.99 × 0.01) + (0.02 × 0.99)) = 0.3333

Thus, the probability the car was actually blue as claimed by the witness is 0.3333 or 33.33%

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Step-by-step explanation:

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