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DiKsa [7]
3 years ago
5

(SAT Prep) In the given figure, what is the value of x+y?

Mathematics
2 answers:
Andru [333]3 years ago
7 0
B 155 because 180-25=155
Elden [556K]3 years ago
5 0

Answer:

b] 155

Step-by-step explanation:

25+ X+ Y = 180[ LINEAR PAIR ARE SUPPLEMENTARY]

X+ Y= 180-25 = 155

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X=5 if you solve the equation 20=8x/2
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Fencing cost $10 per foot. Frances had a rectangular garden that is 4 feet wide and 5 feet long . How much money will frances ne
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Kara fence needs to reach at least 94 feet. How many fence post will she need ?
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Considering the average fence size is 4 feet Kara will need 24 fences

Step-by-step explanation:

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According to a 2009 Reader's Digest article, people throw away about 14% of what they buy at the grocery store. Assume this is t
ahrayia [7]

Answer:

18.67% probability that the sample proportion does not exceed 0.1

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.

For the sampling distribution of a sample proportion, we have that \mu = p, \sigma = \sqrt{\frac{p(1-p)}{n}}

In this problem, we have that:

\mu = 0.14, \sigma = \sqrt{\frac{0.14*0.86}{59}} = 0.045

What is the probability that the sample proportion does not exceed 0.1

This is the pvalue of Z when X = 0.1. So

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

Z = \frac{0.1 - 0.14}{0.045}

Z = -0.89

Z = -0.89 has a pvalue of 0.1867

18.67% probability that the sample proportion does not exceed 0.1

5 0
3 years ago
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