3 years ago

I need full answer will mark brainiest

Mathematics

1 answer:

Dahasolnce [82]3 years ago

4 0

More than 2 because the length of the line opposite to the the obtuse angle can be any length

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Scorpion4ik [409]

Answer:

$x = 11 \sqrt{2}$

$y = 11 \sqrt{2}$

Step-by-step explanation:

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$\cos(45) = \frac{x}{22} \\ \\ x = 11 \sqrt{2}$

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3 years ago

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VLD [36.1K]

Answer:

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A certain tennis player makes a successful first serve 6969% of the time. Suppose the tennis player serves 9090 times in a matc

Wewaii [24]

Answer:

a) 4.387

b) Yes, because np & npq are greater than 10.

c) = 0.017

Step-by-step explanation:

Give data:

p = 0.69

n = 90

a) a

E(X) = np = 62.1

$SD(X) = \sqrt{(np(1-p))}$

$=\sqrt{90\times 0.69(1- 0.69)}$

= 4.387

np = 62.1

q = 1 - p = 1 - 0.69 = 0.31

npq = 19.251

Yes, because np & npq are greater than 10.

$P(X \geq 72 ) = P(X > 71.5)$ [continuity correction]

$= P(Z> \frac{((71.5-62.1)}{ 4.387})$

= P(Z> 2.14 )

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Step-by-step explanation:

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