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Lera25 [3.4K]
2 years ago
12

Nick bought a pair of glasses for $200. He later saw the same glasses advertised for 20% less than what he originally paid. What

price were the glasses being advertised for? 
Mathematics
2 answers:
djyliett [7]2 years ago
4 0
$160

.20 * 200= 40

200-40=160
const2013 [10]2 years ago
4 0

(original-new) / original = discount

(200-new)/200 = .20

multiply by 200 on both sides

200 - new=40

subtract 200 from each side

-new = -160

multiply by -1

new = 160

the selling price is $160

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Answer:

Part a: The coefficient of v^9w^2x^5y^7z^2 is 1.766 \times 10^{13}

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Step-by-step explanation:

part a

From the given equation the

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So now the coefficient of v^9w^2x^5y^7z^2  is given as

=\dfrac{25!}{9!2!5!7!2!}\\=1.766 \times 10^{13}

The coefficient of v^9w^2x^5y^7z^2 is 1.766 \times 10^{13}

Part b:

The number of terms is given as \left (\ {{m+n-1} \atop {n}}  \right )

where m is the number of variables which are 5 here

n is the power which is 25 so the number of variables is given as

\left (\ {{5+25-1} \atop {25}}  \right )\\\left (\ {{29} \atop {25}}  \right )\\\dfrac{29!}{25!4!}=23751

So the number of terms are 23751.

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