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3 years ago

I need help and i also need the work shown...please and thank you

Mathematics

2 answers:

Tomtit [17]3 years ago

7 0

Answer:

55°

Step-by-step explanation:

Angle formed by two intersecting chords is half the sum of the intercepted arcs:

m∠CED = 1/2(mCD + mBU)
125° = 1/2(195° + mBU)
195° + mBU = 250°
mBU = 250° - 195°
mBU = 55°

marin [14]3 years ago

5 0

Answer:

Step-by-step explanation:

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3 years ago

My Notes A large manufacturing plant uses lightbulbs with lifetimes that are normally distributed with a mean of 1600 hours and

Evgen [1.6K]

Answer:

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Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

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$Z = \frac{X - \mu}{\sigma}$

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This is the first percentile of hours. So it is X when Z has a pvalue of 0.01.

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3 years ago

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3 years ago

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