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cestrela7 [59]
3 years ago
14

I need an Answer Immediately,pls!!!!!!

Mathematics
2 answers:
Leya [2.2K]3 years ago
7 0

Answer:

See below.

Step-by-step explanation:

41.5 + 5x = 52.5\\5x = 11\\x = 2.2

Sladkaya [172]3 years ago
3 0

Answer:

41.5+5x=52.55x=11x=2.2

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The lengths of nails produced in a factory are normally distributed with a mean of 4.84 centimeters and a standard deviation of
Helga [31]

Answer:

Top 3%: 4.934 cm

Bottom 3%: 4.746 cm

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 = 4.84, \sigma = 0.05

Top 3%

Value of Z when Z has a pvalue of 1 - 0.03 = 0.97. So X when Z = 1.88.

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

1.88 = \frac{X - 4.84}{0.05}

X - 4.84 = 0.05*1.88

X = 4.934

Bottom 3%

Value of Z when Z has a pvalue of 0.03. So X when Z = -1.88.

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

-1.88 = \frac{X - 4.84}{0.05}

X - 4.84 = 0.05*(-1.88)

X = 4.746

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3 years ago
I am the gratest three digit number divisble by 5 Who I am
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The number you are looking for is 995
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Solve 2x+y=3.5,-x+2y=2.5
padilas [110]

Answer:

y=1.7

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Step-by-step explanation:

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Answer:

180miles=6gallons

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1260/180*6

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Step-by-step explanation:

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2 years ago
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Leokris [45]

Answer:

  x^4 +8/7x^3  + 6x +1

Step-by-step explanation:

8/7x^3 + x^4 + 6x +1

Standard from is from the largest power to the smallest power

  x^4 +8/7x^3  + 6x +1

8 0
3 years ago
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