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Dima020 [189]
3 years ago
6

A. 2 cmB. 2√2 cmC. 4 cmD. 4√2 cm​

Mathematics
1 answer:
algol [13]3 years ago
3 0

Answer:

.D. 4√2 cm

Step-by-step explanation:

With reference angle 45°

base (b) = 4 cm

hypotenuse (h) = AC

Now

Cos 45° = b /h

1/√2 = 4 / AC

AC = 4√2 cm

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Answer:

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Step-by-step explanation:

Confidence interval is expressed using the formula;

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<em>Hence an interval estimate of u with 98% confidence is expressed as </em>

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