(–1) + 5 – (–6) – 5 = A. 0 B. 5 C. –2 D. –3

Mathematics

2 answers:

Keith_Richards [23]2 years ago

7 0

-(-6) = + 6
(-1) + 5 + 6 - 5 = 5
The answer is B

enot [183]2 years ago

5 0

B. If (x = 5)
Hope this helped :)

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The minimum value of the bill that is greater than 95% of the bills is $37.87.

Step-by-step explanation:

When the distribution is normal, we use 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:

$\mu = 28, \sigma = 6$