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3 years ago

8

Donna has 8 CDs that she is going to give away. She lets her best friend choose 2 of the 8 CDs. How many different groups of 2 C

Ds are possible?

1 answer:

lilavasa [31]3 years ago

4 0

There are 4 different possible group of 2

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Step-by-step explanation:

1 3/4 = 7/4

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2/3 / (-9/4)<br><br> 2/3 divided by (-9/4)

Bezzdna [24]

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$\frac{2}{3} \div ( - \frac{9}{4} ) = \\$

$\frac{2}{3} \times( - \frac{4}{9}) = \\$

$- \frac{2 \times 4}{3 \times 9} = - \frac{8}{27} = - ({ \frac{2}{3} })^{3} \\$

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3 years ago

27^-2/3<br><br> A. 9<br> B. 1/9<br> C. -1/9<br> D. -9

geniusboy [140]

<span>27^-2/3
= (3^3)^-2/3
= 3^-2
= 1/3^2
= 1/9

answer
</span><span>B. 1/9</span>

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3 years ago