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ratelena [41]
3 years ago
7

Tonya handed out 240 fliers advertising a school play. It took her 5 hours to hand out all 240 fliers if tonyas rate was 240flie

rs/5hours at what unit rate did she hand out fliers each hour?
Mathematics
2 answers:
MrRissso [65]3 years ago
4 0

\dfrac{240 \textrm{ fliers}}{5 \textrm{ hours}} = 48 \textrm{ fliers/hour}


Zinaida [17]3 years ago
3 0

Assuming that she handed out the same amount of flyers each hour, it would be 48 flyers per hour. Since 240 divided by 5 = 48.

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Here is the full question.

In order for a vaccine to be effective, it should reduce a person's chance of acquiring a disease. Consider a hypothetical vaccine for malaria‚- a tropical disease that kills between 1.5 and 2.7 million people every year.1 Suppose the vaccine is tested with 700 volunteers in a village who are malaria-free at the beginning of the trial. Three hundred of the volunteers will get the experimental vaccine and the rest will not be vaccinated. Suppose that the chance of contracting malaria is 10% for those who are not vaccinated.

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From the given information above:

Suppose, there is no effect from the vaccine, the risk of having malaria for vaccine & no vaccine is equal to 0.1

Now, the Probability of not having malaria if vaccinated or no vaccinated = 1 - 0.1 = 0.9

Therefore: the table is shown below as follows:

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No Vaccine          400 × 0.1 = 40    400 × 0.9 = 360      700-300 = 400

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The risk of malaria for vaccinated if the vaccine cuts the risk of contracting malaria in half are equal to 0.1/2 = 0.05

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Vaccinated       300 × 0.05 = 15     300 × 0.95 = 285       300

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Total                 40 + 15 = 55             285 + 360 = 645       700

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