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larisa [96]
3 years ago
9

What is the total cost of a sweatshirt if the regular price is $42 and the sales tax is 5 1/2%???

Mathematics
2 answers:
Marysya12 [62]3 years ago
7 0
$44.31

.055x42= 2.31
42+2.31=44.31
Elena-2011 [213]3 years ago
6 0
The total is 44.31, this is how you solve it

Step 1: Convert the sales tax rate to decimal:
5 1/2% = 0.055

Step 2: Find the subtotal of the taxable goods and services:
Subtotal = $42

Step 3: Multiply the decimal from Step 1 by the subtotal from Step 2:
Sales Tax = 0.055 x 42
                 = 2.31

Step 4: Round the answer to the nearest cent ( nearest hundredth )
= 2.31 = 2.31

Step 5: Add the sales tax to the total:
subtotal = 42 + 2.31 = 44.31

This is how you solve this problem

Hope I helped : )
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vampirchik [111]

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Step-by-step explanation:

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When n=343 college students are randomly selected and surveyed, it is found that x=110 own a car. Find a 99% confidence interval
Liono4ka [1.6K]

Answer:

The margin of error will be "0.65". A further explanation is provided below.

Step-by-step explanation:

The given values are:

n = 343

x = 110

At 99% confidence level,

\alpha = 1-99%

  =1-0.99

  =0.01

then,

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Z_{\frac{\alpha}{2} }=Z_{0.005}

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Now,

The point estimate will be:

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⇒      =\frac{110}{343}

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⇒  1-\hat{P}=1-0.321

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The margin of error will be:

⇒  E=Z_{\frac{\alpha}{2} }\times \sqrt (\frac{(\hat{P}\times (1 - \hat{P})) }{n} )

On substituting the above values, we get

⇒      =2.576\times \sqrt{\frac{0.321\times 0.679}{343} }

⇒      =2.576\times \sqrt{\frac{0.217959}{343} }

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hence,

⇒  \hat{P}-E

⇒  0.321-0.065

⇒  0.256,0.386

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