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Anni [7]
3 years ago
8

Which expression is equivalent to 8r+16

Mathematics
1 answer:
Sedaia [141]3 years ago
4 0

Answer:

8(r+2)

hope this helps

have a good day :)

Step-by-step explanation:

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A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than
Lemur [1.5K]

Answer:

4.65% probability that a randomly selected customer takes more than 10 minutes

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 question, we have that:

\mu = 7.45, \sigma = 1.52

Probability that a customer takes more than 10 minutes:

This is 1 subtracted by the pvalue of Z when X = 10. So

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

Z = \frac{10 - 7.45}{1.52}

Z = 1.68

Z = 1.68 has a pvalue of 0.9535

1 - 0.9535 = 0.0465

4.65% probability that a randomly selected customer takes more than 10 minutes

6 0
2 years ago
Cho biết DABC ∽DMNP theo tỉ số 2/3 và chu vi của DABC là 12cm. Chu vi của DMNP là .Kết luận đúng là:
artcher [175]

Answer:

C

Step-by-step explanation:

4 0
3 years ago
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Which statement is true?
Taya2010 [7]

Answer:

The sum of 78 and -78 is zero.

Step-by-step explanation:

I used a calculator ;)

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The cost of 5 DVDs and a $15
erastovalidia [21]

Answer:

$3

Step-by-step explanation:

the cost of 5 DVDs and a $15

you didn't ask anything

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Im not sure about the second one, but for the first one, Alex’s height is 167.64 cm. :)
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