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3 years ago

11

Mary got $80 in tips last night for her waitressing job. She spent $8.00 downloading songs to her MP3 player and then spent 1/3

of the remainder on tickets for the spring dance. How much does she have left?

1 answer:

DochEvi [55]3 years ago

4 0

Answer:

she has 48 left

Step-by-step explanation:

please tell me if im right

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We have the following expression

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This is equivalent to

$4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})=(4\times5)cis(\frac{\pi}{4}+\frac{\pi}{6})$

Since

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we have that

$4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})=20cis(\frac{5\pi}{12})$

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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