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andriy [413]
3 years ago
15

a machine uses 2.5 liters of fuel each hour it runs,its fuel tank was filled with 10 L  but 1.5 L have already been used how  ma

ny more hours will the machine run
Mathematics
1 answer:
Hoochie [10]3 years ago
4 0
10-1.5=8.5
8.5/2.5= 3.4 hours
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Hatshy [7]

This question is incomplete, the complete question is;

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y"  = -1.5x + 85.

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Answer:

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Step-by-step explanation:  

Given the data in the question;

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8 0
3 years ago
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