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oee [108]
2 years ago
6

Mr. Rojas spent d dollars to go on vacation. He bought a plane ticket for $250 and stayed in a hotel for 5 nights. If the cost o

f the hotel room was the same each night, what expression can be used to find how much Mr. Rojas paid each night for the hotel?
HELP ME PLEASEEEE IM SO CONFUSEDD :(
Mathematics
1 answer:
Nataly [62]2 years ago
8 0

Answer:

d-250x5=i dont know

Step-by-step explanation:

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Lung cancer is the leading cause of cancer-related deaths in the United States. Researchers examined the idea of testing all Med
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Answer:

a. P(C) = 0.03

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   P(test- | no C) = 0.93

b. Tree diagram is attached.

c. P(test+) = 0.0946

d. P(C | test+) = 0.2822  

Step-by-step explanation:

a. Let C denote Lung Cancer The probability that a heavy smoker will develop lung cancer is 3% i.e. 0.03.

If lung cancer is present, the CT scan result comes out to be positive 89% of the times while if lung cancer is not present, the results are negative 93% of the time. Let test+ denote that the test result is positive and test- denote that the test result is negative.

P(C) = 0.03

P(test+ | C) = 0.89

P(test- | no C) = 0.93

b. The first pair of branches represent whether the individual has cancer or not.

P(C) = 0.03

P(no C) = 1 - 0.03 = 0.97

The second pair of branches will represent if the test result came out positive or negative.

For patients with cancer, P(test+) = 0.89, P(test-) = 1 - 0.89 = 0.11

For patients with no cancer, P(test -) = 0.93, P(test+)= 1 - 0.93 = 0.07.

The tree diagram is attached as an image file.

c. P(test+) = P(C)*P(test+| C) + P(No C)*P(test+| No C)

                                = (0.03)(0.89) + (0.97)(0.07)

                                = 0.0267 + 0.0679

    P(test+) = 0.0946

d. P(C | test+) = P(C ∩ test+) / P(test+)

                       = P(C)*P(test+ | C) / P(test+)

                       = (0.03)*(0.89) / 0.0946

    P(C | test+) = 0.2822  

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2 years ago
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Answer:

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Step-by-step explanation:

5 0
2 years ago
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nika2105 [10]

Answer:

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Step-by-step explanation:

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3 years ago
The ratios of the angles in ABC is 3:5:7. Find the<br> measure of the angles
zepelin [54]

Answer:

Step-by-step explanation:

If the ratio of triangle = 3:5:7

Total ratio = 3+5+7 = 15

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