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Nostrana [21]
3 years ago
5

2. In the diagram below, secants PT and PU have been drawn from exterior point P such that the four arcs

Mathematics
1 answer:
scoundrel [369]3 years ago
8 0

Answer:

(a) x = 30°

(b) mRS =  30°

mST =  120°

mTU  = 120°

mUR = 90°

Step-by-step explanation:

(a) In the picture attached, the diagram is shown.

Given that m arc RS = x, from the ratios:

m arc ST = 4x

m arc TU = 4x

m arc UR = 3x

The addition of the four arcs must be equal to 360°, then:

x + 4x + 4x + 3x = 360°

12x = 360°

x = 360°/12 = 30°

(b) m arc RS = x = 30°

m arc ST = 4x = 4*30° = 120°

m arc TU = 4x = 4*30° = 120°

m arc UR = 3x = 3*30° = 90°

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3 years ago
A film distribution manager calculates that 4% of the films released are flops. If the manager is correct, what is the probabili
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Answer:

9.34%

Step-by-step explanation:

p = 4%, or 0.04

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u = Expected value = n * p = 667 * 0.04 = 26.68

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Now, the question is if the manager is correct, what is the probability that the proportion of flops in a sample of 667 released films would be greater than 5%?

This statement implies that the p-vlaue of Z when X = 5% * 667 = 33.35

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3 years ago
Which of the following is the discriminant of the polynomial below x^2+4x+5
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Answer:

\huge\boxed{\sf Discriminant = -4}

Step-by-step explanation:

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So,

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Hence,

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\rule[225]{225}{2}

Hope this helped!

<h3 /><h3>~AH1807</h3>
4 0
3 years ago
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