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3 years ago

12

Jenny earned 92 of a possible 120 points on a test. She lost 4 points for each incorrect answer. How many incorrect answers did

Jenny have?

1 answer:

daser333 [38]3 years ago

6 0

Here are some guesses I have:
92 / 4 = 23
120 / 4 = 30

My guess is 23 or 30 :-)

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Express the complex number in trigonometric form. <br><br> -4i

jeka57 [31]

Answer:

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Step-by-step explanation:

We have a+ib = r(cosθ+isinθ)

$r=\sqrt{a^2+b^2}\texttt{ and }tan\theta =\frac{b}{a}$

Here a = 0 and b = -4

Substituting

$r=\sqrt{0^2+(-4)^2}\\\\r=4\\\\tan\theta =\frac{-4}{0}\\\\\theta =270^0\texttt{(Since a is zero and b is negative)}$

-4i = 4(cos 270 +i sin 270)

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bija089 [108]

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What is the square of 5y?

Virty [35]

Answer:

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Step-by-step explanation:

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