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Gnom [1K]
3 years ago
14

one superstar pizza feeds 4 people. if you invite 42 people to your party how many pizzas should you order?​

Mathematics
1 answer:
erica [24]3 years ago
5 0
Answer: 11 because I don’t even know
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PLEASE SOMEONE HELP I TRULY DO NOT UNDERSTAND
IceJOKER [234]

Hi there!

\large\boxed{f^{-1}(x) =  \sqrt[3]{\frac{x+4}{9} } }

f(x) = 9x^{3} - 4

Find the inverse by replacing f(x) with y and swapping the x and y variables:

x = 9y^{3} - 4

Isolate y by adding 4 to both sides:

x + 4 = 9y^{3}

Divide both sides by 9:

\frac{x+4}{9}= y^{3}

Take the cube root of both sides:

y = \sqrt[3]{\frac{x+4}{9} }\\\\f^{-1}(x) = \sqrt[3]{\frac{x+4}{9} }

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A cube has a volume of 729 cubic inches. What is the length of each edge? Explain
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Answer:

The\:length\:of\:each\:edge\:is\:9

Step-by-step explanation:

Volume\:of\:cube:V=a^{3} \:(a\:is\:the\:length\:of\:each\:edge)\\\Leftrightarrow a=\sqrt[3]{V} \Leftrightarrow a=\sqrt[3]{729} =9

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