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elena-14-01-66 [18.8K]
2 years ago
9

A truck driver drove 48 miles for 45 minutes. At this rate, how many miles can the truck driver drive in one hour?

Mathematics
1 answer:
alexandr1967 [171]2 years ago
7 0

Answers

2880

Step-by-step explanation:

48 miles = 1 minute

? = 60 minutes( 1hr )

1hr = 48 × 60 = 2880miles

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In testing a certain kind of missile, target accuracy is measured by the average distance X at which the missile explodes. The d
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The answer is c) 761.0

Step-by-step explanation:

Mathematical hope (also known as hope, expected value, population means or simply means) expresses the average value of a random phenomenon and is denoted as E (x). Hope is the sum of the product of the probability of each event by the value of that event. It is then defined as shown in the image, Where x is the value of the event, P the probability of its occurrence, "i" the period in which said event occurs and N the total number of periods or observations.

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Then you first calculate E [x] and E [x^{2}], and then be able to calculate the variance.

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On the other hand

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E[x²]=0+5+250+8250

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Var[x]=8505-7744

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