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LekaFEV [45]
2 years ago
11

Please help me I don't understand this at all

Mathematics
1 answer:
saveliy_v [14]2 years ago
6 0

Answer:

a) θ = \frac{4}{3}\pi     b) r = 31.27 inch

Step-by-step explanation:

(a)

area of sector: \frac{1}{2} * r² * θ

384 = \frac{1}{2} * r² * θ

384 = \frac{1}{2} * (24)² * θ

θ = 384/288

θ = \frac{4}{3}\pi

(b)

384 = \frac{1}{2} * r² * \frac{\pi }{4}

r² = 384 * 2 * \frac{4}{\pi }

r² = 977.848

r = √977.848

r = 31.27 inch

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Answer:

56% ≤ p ≤ 70%

Step-by-step explanation:

Given the following :

Predicted % of votes to win for candidate A= 63%

Margin of Error in prediction = ±7%

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Hence,

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