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dimulka [17.4K]
3 years ago
12

Every year, a teacher surveys his students about the number of hours a week they watch television. In 2002, his students watched

an average of 12 hours of television per week. In 2012, the number of hours spent watching television decreased to five per week. What is the percent decrease in the hours of television watched, rounded to the nearest tenth?
Mathematics
2 answers:
lapo4ka [179]3 years ago
9 0

Answer:58.3%

Sorry my sisster helped me do this one and i need to get her notes then i will post them to explain.

Ray Of Light [21]3 years ago
4 0
58.3 percent rounded to the nearest tenth
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Which pair of numbers is relatively prime
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Answer:

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6 0
3 years ago
Read 2 more answers
What is four over nine equal A over 45
QveST [7]
Answer: A = 20


How to Solve:

Just by looking at this problem I can tell that the denominators (9 an 45) are factors of 9. So the second equation is multiplied by 5 from the first equation.

4/9 x 5

4 x 5 = 20
— -—
9 x 5 = 45

So A would be 20.


Another way to solve this would be by multiplying the 1st equations numerator with the second equations denominator:

4 x 45 = 180

Then divide 180 with the 1st equation’s denominator.

180 / 9 = 20

A = 20
5 0
3 years ago
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How do you solve 42 divided by 63
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