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valentina_108 [34]
2 years ago
12

Seth is trying to find the unit price for a package of blank compact discs on sale at 10 for $5.49 . Find his mistake and correc

t it
Mathematics
1 answer:
andriy [413]2 years ago
6 0

The unit price of the disk is $0.549

<h3>Unit price of goods</h3>

The unit price of goods are the price of one portion of the goods in question.

From the given question,  a package of blank compact discs on sale at 10 for $5.49, this can be expressed as;

10 disc = $5.49

The unit price of the disc is the price of just one of the disc. The unit price is expressed as;

1 disc = x

Find the ratio

10/1 = 5.49/x

Cross multiply

10x = 5.49

Divide both sides by 10

10x/10 = 5.49/10

x = $0.549

Hence the unit price of the disk is $0.549

Learn more on unit price here: brainly.com/question/825113

#SPJ1

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The value of the given expression is

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Step by step Explanation:

Given that tanA=a

To find the value of \frac{sin4A-2sin2A}{sin4A+2sin2A}

Let us find the value of the expression :

\frac{sin4A-2sin2A}{sin4A+2sin2A}=\frac{2cos2Asin2A-2sin2A}{2cos2Asin2A+2sin2A} ( by using the formula sin2A=2cosAsinA here A=2A)  

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=\frac{-(sin^2A+cos^2A-cos^2A+sin^2A)}{sin^2A+cos^2A+(cos^2A-sin^2A)}

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and

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