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17.07.2019 •
Mathematics
Jonah collects rainwater in a large barrel that weighs 30 pounds. when there are 10 gallons of water in the barrel, the total weight of the barrel and the water is 113.4 pounds. when there are 20 gallons of water, the total weight is 196.8 pounds. which equation and graph match this situation? a. y = 8.34x + 30 b. y = 30x + 8.34 c. y = 30x + 8.34 d. y = 8.34x + 30
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Ответ:
We have then:
x: number of gallons of water
y: total weight
We then have an equation of the form:
Where,
Substituting values:
We choose an ordered pair:
Substituting values:
Rewriting:
y = 8.34x + 30
Ответ:
48%
Step-by-step explanation:
We know that there are 120 used cars for sale.
Out of a sample of 15 of these used cars, 6 of them have been in an accident.
So the probability of getting an accidental car =
Now to find the best estimate of the percent of the used car lot's vehicles which are accidental, we will multiply the probability of getting an accidental car with the total number of used cars.
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