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Nikitich [7]
3 years ago
11

Christelle and Larkin both drive customers on the weekend. Christelle charges a flat fee of $4, plus $1 per mile. Larkin charges

a flat fee of $2, plus $1.25 per mile
Mathematics
1 answer:
ozzi3 years ago
5 0

Complete question :

Christelle and Larkin both drive customers on the weekend. Christelle charges a flat fee of $4, plus $1 per mile. Larkin charges a flat fee of $2, plus $1.25 per mile.

Which equations represent each of their earnings, (y), after a given number of miles, (x)?

Select two that apply. Put more then one answer

y=4x+4

y=x+4

y=2x+1.25

y=1.25x+2

y=−x−4

y=1.25x−2

Answer:

y=x+4

y=1.25x + 2

Step-by-step explanation:

Christelle:

Flat fee = $4

Charge per mile = $1

Earning, y after x miles

y = 4 + x

Lakin:

Flat fee = $2

Charhe per mile = $1.25

EEarning, y after x miles

y = 2 + 1.25x

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It’s percentage need help
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Step-by-step explanation:

To solve this, we first need to find 13% of $5,400.

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Now, we need to calculate how much money she'll earn in a whole year. So, let's see how many weeks are in a year.

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3 years ago
The volume of a cube is 27 cubic in. Which expression represents s, the lenght of a side of the cube
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Answer:

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In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You hav
Alisiya [41]

Answer:

99.96% probability that the sample proportion will be within 10 percent of the population proportion

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:

Proportion p = 0.75

Mean:

\mu = p = 0.75

Standard deviation of the proportion:

\sigma = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.75*0.25}{229}} = 0.0286

What is the probability that the sample proportion will be within 10 percent of the population proportion?

This is the pvalue of Z when X = 0.75+0.1 = 0.85 subtracted by the pvalue of Z when X = 0.75 - 0.1 = 0.65. So

X = 0.85

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

Z = \frac{0.85 - 0.75}{0.0286}

Z = 3.49

Z = 3.49 has a pvalue of 0.9998

X = 0.65

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

Z = \frac{0.65 - 0.75}{0.0286}

Z = -3.49

Z = -3.49 has a pvalue of 0.0002

0.9998 - 0.0002 = 0.9996

99.96% probability that the sample proportion will be within 10 percent of the population proportion

4 0
3 years ago
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