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amm1812
3 years ago
13

Donna purchased a prepaid phone card for $25. Long distance calls cost

Mathematics
1 answer:
levacccp [35]3 years ago
6 0
First you figure out how much money she used so $25 - $20.14 which is equal to $5.86. Now you need to figure out how much minutes that is equal to $5.86. So you need to figure out what x is equal to in:  x * <span> ¢</span>18 = $5.86.
x is equal to 32.555555 

so she was calling for 32.555555... minutes or if you are rounding it would be 32.6 minutes

hope this helps ^^
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1mg = 0.001g

Then we need to look at the third digit after the decimal point.

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Remember that if the third digit after the decimal point is 5 or bigger, then we round up.

if the third digit is smaller than 5, then we round down.

Now, the maximum possible value of this weight is when the third digit is equal to 4 (4 mg) where because it is smaller than 5, we round it down to 1.56g

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