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bonufazy [111]
3 years ago
11

A store charges 5.5 % sales tax on all items. If an item costs d dollars before tax, which expression represents the total cost

of the item, in dollars and cents, after tax?
Mathematics
1 answer:
Black_prince [1.1K]3 years ago
7 0

Answer: d + 0.055d or 1.055d

Step-by-step explanation:

Cost of item = d

Sales tax percent = 5.5%

Total cost = Cost of item + Sales tax

= d + (5.5% × d)

= d + (5.5/100 × d)

= d + (0.055 × d)

= d + 0.055d

= 1.055d

Therefore, the expression that represents the total cost of the item, in dollars and cents, after tax will be:

d + 0.055d or 1.055d.

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Answer:

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Step-by-step explanation:

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The 95% confidence interval for the mean is between 0.985g/cm² and 1.047 g/cm².

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