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Helga [31]
3 years ago
9

A rectangular parking lot has

Mathematics
2 answers:
svetlana [45]3 years ago
7 0

Answer:

length: 85

width: 40

Step-by-step explanation:

length: 2w + 5

width: w

perimeter = 2L + 2W

250 = 2(2w + 5) + 2w

250 = 4w + 10 + 2w

250 = 6w + 10

240 = 6w

w = 40

length: 2(40) + 5 = 85

width: 40

oksano4ka [1.4K]3 years ago
6 0

Answer:

Step-by-step explanation:

180 yards :)

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204, 200,196,... find the 31st term
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Answer:

31st term = 84

Step-by-step explanation:

Given:

204, 200,196,...

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31st term

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204, 200,196,...

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sergij07 [2.7K]

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https://www.calculatorsoup.com/calculators/geometry-plane/polygon.php

that might help

Step-by-step explanation:

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Calculate a critical z-score for a left-tailed, right-tailed, or two-tailed test.
muminat

Answer:

a. Z = -1.175.

b. Z = 1.34.

c. |Z| = 2.054.

d. |Z| = 1.28.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

a. The critical z-score for a left-tailed test at a 12% significance level

Left-tailed test: The region of interest is the 12th percentile or below.

Thus, the critical z-score is Z with a p-value of 0.12, so Z = -1.175.

b. The critical z-score for a right-tailed test at a 9% significance level

Right-tailed test: The region of interest is the 100 - 9 = 91th percentile and above.

Thus, the critical z-score is Z with a p-value of 0.91, so Z = 1.34.

c. The critical z-score for a two-sided test at a 4% significance level is 1.75.

Two-tailed test: The region of interest is between the 4/2 = 2th percentile and the 100 - (4/2) = 98th percentile.

Thus, the critical z-score is |Z| with a p-value of 0.02 or 0.98, so |Z| = 2.054.

d. The critical z-score for a two-sided test at a 20% significance level is 0.85.

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Thus, the critical z-score is |Z| with a p-value of 0.1 or 0.9, so |Z| = 1.28.

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