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vovikov84 [41]
2 years ago
10

While visiting friends in Brookfield, Janet bought a bike lock that was marked down 20% from an original price of $8.75. If the

sales tax in Brookfield is 7%, what was the total cost of the bike lock?
Mathematics
1 answer:
Shtirlitz [24]2 years ago
3 0

Answer:

7.49

Step-by-step explanation:

Well first you have to find how much the bike lock cost.

8.75 x 0.2

1.75 = how much 20% of 8.75 is

8.75-1.75

7 = the cost of the bike lock with the 20% markdown

Now you have to find the sales tax.

7 x 0.07

0.49

7 + 0.49

7.49 = total cost with all the stuff

Hopefully this was helpful. There is a shorter method too tho.

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Ghella [55]
Perfect squares are n² where n is a whole number
whole numbers are like 0,1,2,3,4,5,6, etc
no decimal or fractions

we can do that be looking at the perfect squares we know
2²=4
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so we see 47 is between 6² and 7²
therefor, for n²=47, n is between 6 and 7 and is therfore not a whole number
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Answer:

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