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juin [17]
3 years ago
15

From a window 20 feet above the ground, the angle of elevation to the top of a building across

Mathematics
1 answer:
lions [1.4K]3 years ago
4 0

the solution is in the above picture.

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A screening test for a disease shows a positive result in 91% of all cases when the disease is actually present and in 7% of all
Jobisdone [24]

Answer:

0.0713 = 7.13% probability that the result is positive.

Step-by-step explanation:

Probability of a positive test:

91% of 1/650(has the disease).

7% of 1 - 1/650 = 649/650(does not have the disease). So

p = 0.91\frac{1}{650} + 0.07\frac{649}{650} = \frac{0.91 + 0.07*649}{650} = 0.0713

0.0713 = 7.13% probability that the result is positive.

4 0
2 years ago
For the diagram below, which equation is the correct use of the distance formula?
MrMuchimi

Answer:

????

Step-by-step explanation:

Where's the equation? diagram?

8 0
3 years ago
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What is 20+1?I really need help.LOL
Sveta_85 [38]
The answer to 20+1

=21
6 0
3 years ago
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Please help. Will give brainliet
kykrilka [37]

Answer:

It is D

Step-by-step explanation:

Because,

The sign ">" should have an underline and the point starts at 4, not 3. If it is not correct, I am sorry.

8 0
3 years ago
Q: The data set, {85, 70, 91, 73}, represents Connie's test scores for the first four tests of the semester. Connie scored an 75
alexira [117]

Answer:

A. decrease

Step-by-step explanation:

The mean average number without the fifth test is 79.75 so her score went down. Hope this helped!

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3 years ago
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