shanyeah

19.01.2021 • 

Mathematics

El Dorado Community College considers a student to be full-time if he or she is taking between 12 and 18 units. Let B = the amount spent on books in the fall semester for a randomly selected full-time student at El Dorado Community College. Suppose that
[population mean] B = 153 and [population standard deviation] B=32. Let C = overall cost for tuition and fees for a randomly selected full-time student at El Dorado
Community College and that [population mean] C=$832.50 and[population standard deviation]= $103
Find the mean and standard deviation of the cost of tuition, fees and books (C + B) for a randomly selected full-time student at El
Dorado Community College,

Ответ:

deehunchoo

31.05.2022

Mathematics

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Part (A)

The blue car travel 38.5 miles on 1.25 gallons of gasoline

∴ The unit rate of the blue car = 38.5 ÷ 1.25 = 30.8  miles per gallon

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Part (B):

The red car travel miles on gallons of gasoline.

= 23.2   and   = 0.8

∴ The unit rate of the red car = 23.2 ÷ 0.8 = 29  miles per gallon

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Part (C):

Which car could travel the greater distance on 1 gallon of gasoline?

The by reviewing part (A) and part (B)

So, the blue car can travel the greater distance on 1 gallon of gasoline.

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