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jek_recluse [69]
3 years ago
6

How do I figure this out?

Mathematics
1 answer:
Vladimir [108]3 years ago
6 0

The sum of the interior angles of an n-gon is

180^\circ(n-2)

So if the total is 5400 deg, then

5400^\circ=180^\circ(n-2)\implies n-2=30\implies n=32

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Countering a cost $9.40 per sales tax. After sales tax, it cost $9.87. What is the sales tax rate?
Nady [450]
STEP 1:
find the sales tax (decimal form)

x= sales tax

Cost + (Cost * Sales Tax)= Total
plug in known numbers

$9.40 + ($9.40 * x)= $9.87

9.40 + 9.40x= 9.87
subtract 9.40 from both sides

9.40x= 0.47
divide both sides by 9.40

x= 0.47/9.40

x= 0.05 sales tax decimal form


STEP 2:
find sales tax percentage

= 0.05 * 100
or move decimal to the right two decimal places

= 5% sales tax percent form


ANSWER: The sales tax is 5% (or 0.05 in decimal form)

Hope this helps! :)
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3 years ago
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Answer:

2 hrs, 24 min

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Step-by-step explanation:

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3 years ago
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