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3 years ago

How are a discount and a sales tax alike? How are they different?

2 answers:

5 0

In both a percentage is taken of the money but in the discount the money taken off while in the sales tax money is added.

saveliy_v [14]3 years ago

3 0

Sales tax and discount are a like because they are both a percentage needed. Sales tax is a percentage added when buying something. Discount is a percentage taken off

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3 years ago

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2 years ago

What is the ratio of x to y?

abruzzese [7]

$\frac{3}{2} = \frac{2x}{2x+y}$

From any proportion, we get another proportion by inverting the extremes (or the means):

$\frac{2x+y}{2} = \frac{2x}{3}$ = k

so we have:

2x=3k
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x= $\frac{3}{2} k$

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The corect answer is A. -3/2

or:

$\frac{3}{2} = \frac{2x}{2x+y}$

From any proportion, we get another proportion by inverting the extremes and the means:

$\frac{2x+y}{2x} = \frac{2}{3}$

We use a property of proportions:

$\frac{a}{b} = \frac{c}{d}$ where a, d are extremes and b,c are means and the product of the extremes equals the product of the means (a*d=b*c),

so we have

$\frac{a-b}{b} = \frac{c-d}{d}$ or

$\frac{a+b}{b} = \frac{c+d}{d}$ (you can check this also by "the product of the extremes equals the product of the means")

$\frac{2x+y}{2x} = \frac{2}{3}$

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3 years ago

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Step-by-step explanation:

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2 years ago

Read 2 more answers