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dangina [55]
3 years ago
12

Could someone help me out

Mathematics
2 answers:
AnnyKZ [126]3 years ago
7 0
It is the second one
Sonbull [250]3 years ago
5 0

Answer:

−10d^4+17d^2s−6s^2

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Step-by-step explanation:

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A normal distribution has a mean of 137 and a standard deviation of 7. Find the z-score for a data value of 121. Incorrect Round
Neko [114]

Answer:

The z-score for a data value of 121 is -2.29.

Step-by-step explanation:

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 = 137, \sigma = 7

Find the z-score for a data value of 121.

This is Z when X = 121. So

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

Z = \frac{121 - 137}{7}

Z = -2.29

The z-score for a data value of 121 is -2.29.

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3 years ago
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The rectangle is three times its width.
Airida [17]

Answer:

Length= 30 in

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Step-by-step explanation:

Let the width of the rectangle be x in.

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80= 2(3x) +2(x)

80= 6x +2x

8x= 80 <em>(</em><em>simplify</em><em>)</em>

x= 80 ÷8 <em>(</em><em>÷</em><em>8</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

x= 10

Thus width of rectangle= 10 in

Length of rectangle

= 3(10)

= 30 in

7 0
3 years ago
Please help, I’m stuck on this one question.
Mamont248 [21]

Answer:

D the last answer

Step-by-step explanation:

As X approaches positive or negative infinity, f(x) would approach negative infinity.

6 0
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