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yawa3891 [41]
3 years ago
12

If you want to buy an item in a store that costs $45.50 and is on sale for 10% off, then how much would the item actually cost y

ou after the discount? Round to the nearest cent.
Mathematics
2 answers:
Kaylis [27]3 years ago
7 0

Answer:

$40.95

Move the decimal over to the left once and you get 10% off the all you do is subtract that from the original cost.

dalvyx [7]3 years ago
5 0

Answer:

$40.95

Step-by-step explanation:

Multiply 45.50 by 0.10 and get 4.55. 4.55 is the discount. Then subtract 4.55 from 45.50 and get 40.95

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The demand for a daily newspaper at a newsstand at a busy intersection is known to be normally distributed with a mean of 150 an
AURORKA [14]

Answer:

171 newspapers.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 150, \sigma = 25

How many newspapers should the newsstand operator order to ensure that he runs short on no more than 20% of days

The number of newspapers must be on the 100-20 = 80th percentile. So this value if X when Z has a pvalue of 0.8. So X when Z = 0.84.

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4 0
3 years ago
If you can buy 1/3 of a box of chocolates for 6 dollars, how much can you purchase for 4 dollars
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Answer:

2/9

Step-by-step explanation:

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Answer:

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Answer:

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Step-by-step explanation:

8

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