3 years ago

What is 18% of 900? (please answer quickly!)

Mathematics

1 answer:

Daniel [21]3 years ago

5 0

162 is the answer. :)

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Let <img src="https://tex.z-dn.net/?f=sin%5Cbeta%20%3D%5Cfrac%7B2%5Csqrt%5B%5D%7B2%7D%20%7D%7B5%7D%20%5C%5C" id="TexFormula1" ti

Brrunno [24]

Since beta is in the first quadrant, the final answer will be positive.

To find cos(beta) so we can use the half angle identity, we can substitute into the Pythagorean identity. Doing so gives us that

$\sin( \beta ) = \frac{ \sqrt{17} }{5}$

So, this means that

$\sin( \frac{ \beta }{2} ) = \sqrt{ \frac{1 - \frac{ \sqrt{17} }{2} }{2} } = \sqrt{ \frac{2 - \sqrt{17} }{4} } = \frac{ \sqrt{2 - \sqrt{17} } }{2}$

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1 year ago

Write annequivalent fraction by multiplying 2/3

STatiana [176]

$\bf \cfrac{2}{3}\cdot \cfrac{same}{same}\implies \stackrel{equivalent~fraction}{\cfrac{2(same)}{3(same)}}\qquad therefore\qquad \cfrac{2}{3}\cdot \cfrac{9}{9}\implies \stackrel{equivalent}{\cfrac{18}{27}}$

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3 years ago

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Step-by-step explanation:

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Help me out please<br> simple 8th grade math.

galben [10]

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The blank is minus 3

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