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lana [24]
3 years ago
9

After a 20% discount, the price of a pair of shoes was $18.what was the price before the discount

Mathematics
1 answer:
malfutka [58]3 years ago
4 0

Answer:

$21.60

Step-by-step explanation:

18/5 is 3.6, so 18+3.6 or 21.6

Hope this helps :D

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Let f(t) give the number of liters of fuel oil burned in t days, and w(r) the liters burned in r weeks. Find a formula for w by
viktelen [127]

Answer:

7 f(t)

Step-by-step explanation:

So, our f(t) is the number of liters burned in t days. If t is 1, f(t)=f(1) and so on for every t.

w(r) id the number of liters in r weeks. This is, in one week there are w(1) liters burned.

As in one week there are 7 days, we can replace the r, that is a week, by something that represents 7 days. As 1 day is represented by t, one week can be 7t (in other words r = 7t). So, we have that the liters burned in one week are:

w(r) = w[7f(t)]

So, we represented the liters in one week by it measure of days.

So, we can post that the number of liters burned in 7 days is the same as the number of liters burned 1 day multiplied by 7 times. So:

w (r) = w[7 f(t)] = 7 f(t)

Here we hace the w function represented in terms of t instead of r.

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sasho [114]

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Step-by-step explanation:

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Use the rules of exponents to evaluate or simplify. Write without negative exponents.
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Hii guys plz help me
Delicious77 [7]

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Step-by-step explanation:

5 0
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Read 2 more answers
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chubhunter [2.5K]

10 + 16 = 26

EZ

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