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3 years ago

11

Exactly 40% of the students who took a quiz scored a B. If 14 students scored a B on the quiz, what was the total number of stud

ents who took the quiz?

1 answer:

Kisachek [45]3 years ago

8 0

Sorry the app kept saying incorrect answer

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Step-by-step explanation:

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Find the domain of f(x)=x-9/x squared-81

vagabundo [1.1K]

$f(x)=\dfrac{x-9}{x^2-81}\\\\\text{The domain:}\\\\x^2-81\neq0\qquad\text{add 81 to both sides}\\\\x^2\neq81\to x\neq\pm\sqrt{81}\\\\x\neq-9\ \wedge\ x\neq9\\\\Answer:\ \boxed{\text{All real numbers except -9 and 9}}\to\boxed{x\in\mathbb{R}-\{-9,\ 9\}}$

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3 years ago

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nata0808 [166]

Answer:

24

Step-by-step explanation:

I have had this question before I know the answer

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3 years ago

Find a number which is when added to its square the sum will be 72

34kurt

Answer:

8

Step-by-step explanation:

8 + 8 x 8 = 8 + 64 = 72

Hope that helps!

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3 years ago

Put these numbers in order from least to greatest.<br><br> 7, -1/4,-15/20

Agata [3.3K]

Answer:

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2 years ago