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ra1l [238]
3 years ago
13

Which answer choice is a solution to the inequality 1.5x+3.75≥5.5? –1 1 1.5 0

Mathematics
1 answer:
Yuki888 [10]3 years ago
4 0

Answer:

<h2>x ≥ 1.17</h2>

Step-by-step explanation:

1.5x+3.75≥5.5

First of all subtract 3.75 from both sides of the equation

That's

1.5x + 3.75 - 3.75 \geq5.5 - 3.75 \\ 1.5x \geq1.75

<u>Divide both sides by 1.5</u>

\frac{1.5x}{1.5}  \geq \frac{1.75}{1.5}  \\

We have the final answer as

<h3>x ≥ 1.17</h3>

Hope this helps you

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Answer:

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Step-by-step explanation:

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2 years ago
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A set of city temperatures in April are normally distributed with a mean of 19.7 degrees Celsius and a standard deviation of 2 d
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Answer:

19.77% of average city temperatures are higher than that of Cairo

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 question, we have that:

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What percentage of average city temperatures are higher than that of Cairo?

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