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son4ous [18]
3 years ago
14

What is the final price of a $24 sweatshirt if there is a 20% discount applied and then a 7% sales tax added

Mathematics
2 answers:
Harman [31]3 years ago
8 0
The answer should be D)
balandron [24]3 years ago
6 0

Given :Price of sweatshirt is $24.

Discount is 20%

Discount given of shirt is 20% of $24=.20(24)=4.8

Discounted price of shirt = 24-4.8= 19.2

Sales tax of 7% is added to the discounted price.

Sales tax on the discounted price is 7% of $19.2 =.07(19.2)=1.344

final Price of sweat shirt= discounted price + sales tax =19.2+1.344=20.54

Option D.$20.54 is the right answer.


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3 years ago
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Which ordered pairs are on the line with equation y+3.5=0.75(x−2)?
andrey2020 [161]
Given y + 3.5 = 0.75(x - 2)

when x = 4,

y + 3.5 = 0.75(4 - 2) = 0.75(2) = 1.5
y = 1.5 - 3.5 = -2.

Thus, the ordered pair (4, -2) is the line with equation y + 3.5 = 0.75(x - 2)

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y + 3.5 = 0.75(-4 - 2) = 0.75(-6) = -4.5
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Thus, the ordered pair (-4, -8) is the line with equation y + 3.5 = 0.75(x - 2)

When x = 1,

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Thus, the ordered pair (1, 1.75) is not on the line with equation y + 3.5 = 0.75(x - 2)

When x = 7,

y + 3.5 = 0.75(7 - 2) = 0.75(5) = 3.75
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Thus, the ordered pair (7, 0.25) is not on the line with equation y + 3.5 = 0.75(x - 2)
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3 years ago
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WORTH 100 POINTS PLEASE HELP
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4 0
2 years ago
ou are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on cons
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Answer:

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Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.96}{2} = 0.02

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.02 = 0.98, so Z = 2.056.

Now, find the margin of error M as such

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Within 4 years of the actual mean

We have to find n for which M = 4. So

M = z\frac{\sigma}{\sqrt{n}}

4 = 2.056\frac{\sigma}{\sqrt{n}}

2.056\sqrt{n} = 4\sigma

\sqrt{n} = \frac{4\sigma}{2.056}

(\sqrt{n})^2 = (\frac{4\sigma}{2.056})^2

n = (\frac{4\sigma}{2.056})^2

(\frac{4\sigma}{2.056})^2, rounded up, if needed, citizens should be included in the sample, in which \sigma is the standard deviation of the population.

8 0
3 years ago
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