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Marianna [84]
4 years ago
6

It costs Doug $30 to set up a cupcake stand. He charges $2 for every cupcake he sells. If Doug makes $48 of profit in one day, h

ow many cupcakes does he sell? 14 cupcakes 24 cupcakes 12 cupcakes 39 cupcakes
Mathematics
1 answer:
Lunna [17]4 years ago
6 0

Answer:

It is 39 cupcakes.

Since he charges $2 per cupcake (39), it is 78.

He makes profit so subtract 30 from 78 and you get $48.

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Step-by-step explanation:

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I need help with number 7, and the second part of number 8. Thank you!
tangare [24]

Answer:

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Step-by-step explanation:

7. Solve the equation

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t=\cos x,

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Now,

\cos x=-1\ \text{or}\ \cos x=\dfrac{1}{2}

Solve each equation separately for 0\le x

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\cos x=\dfrac{1}{2}\\ \\x=\pm\arccos \dfrac{1}{2}+2\pi k,\ k\in Z\\ \\x=\dfrac{\pi }{3}\ \text{and}\ x=\dfrac{5\pi }{3}

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Rewrite it:

\sin x(1+2\cos x)=0

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1+2\cos x=0\\ \\\cos x=-\dfrac{1}{2}\\ \\x=\pm \arccos \left(- \dfrac{1}{2}\right)+2\pi k,\ k\in Z\\ \\x=\dfrac{2\pi }{3}\ \text{and}\ x=\dfrac{4\pi }{3}

5 0
4 years ago
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Answer:

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Step-by-step explanation:

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pogonyaev

Answer:

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Step-by-step explanation:

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hope this helps

brainliest appreciated

good luck! have a nice day!

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