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3 years ago

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A long distance calling plan charges 99 cents per minute for any call not exceeding 20 minutes in length and 7 cents for each ad

ditional minute. Determine how much a call lasting 23, 36, and 58 minutes would cost.

1 answer:

Ivanshal [37]3 years ago

3 0

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Need help! Law of cosines...find b round to the nearest tenth please

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ANSWER

$B = 27.8 \degree$

EXPLANATION

The law of cosine is given by the formula:

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$B = \cos ^{ - 1} (0.88419)$

$B = 27.8 \degree$

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Answer:

solution:

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Step-by-step explanation:

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x + y = 90

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put the system of linear equations into standard form

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4.75x + 2.50y = 270

x + y = 90

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