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EastWind [94]
3 years ago
12

Marco paid $36.89 for 8.6 gallons of gas.  What is the price per gallon?

Mathematics
2 answers:
dmitriy555 [2]3 years ago
8 0

Answer:

4.289534884 or it is about 4.3 dollars

Step-by-step explanation:

Because it cannot be divided into an actual real number like 2 or 5, so you must either round it or keep the whole thing. (depends what the question wants you to do).

Semenov [28]3 years ago
6 0
36.89 total divided by the 8.6 gallons he bought = 4.2 so the price per gallon would be $4.20
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Probability that the student scored between 455 and 573 on the exam is 0.38292.

Step-by-step explanation:

We are given that Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118.

<u><em>Let X = Math scores on the SAT exam</em></u>

So, X ~ Normal(\mu=514,\sigma^{2} =118^{2})

The z score probability distribution for normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma} ~  N(0,1)

where, \mu = population mean score = 514

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Now, the probability that the student scored between 455 and 573 on the exam is given by = P(455 < X < 573)

       P(455 < X < 573) = P(X < 573) - P(X \leq 455)

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<em>The above probability is calculated by looking at the value of x = 0.50 in the z table which has an area of 0.69146.</em>

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