50 points please help

Mathematics

2 answers:

ioda3 years ago

8 0

4x row 3 box 2 that’s the only one I know

satela [25.4K]3 years ago

6 0

Step-by-step explanation:

Start filling in from the bottom, left to right

Row 2 from bottom:

-2x + 3
3 + (-5) = -2
-5 + 7y = 7y - 5
7y + 1

Row 3 from bottom:

2x + (-2x) + 3 = 3
-2x + 3 + (-2) = -2x + 1
-2 + 7y - 5 = 7y - 7

Row 4 from bottom:

3 + (-2x) + 1 = -2x + 4
7y - 7 - 5 + 15y = 22y - 12

Row 5 from bottom:

-2x + 4 -2x - 6 + 7y = -4x + 7y - 2
-2x - 6 + 7y + 22y - 12 = -2x + 29y - 18

Top row:

-4x + 7y - 2 - 2x + 29y - 18 = -6x + 36y - 20

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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:

$\mu = 3466, \sigma = 546$