Answer:
As shown in picture, we have
Hope this helps!
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Explanation:
Let say right triangle ABC has A = 90 deg.
=> BC is hypotenuse.
=> BC = AC x BC/AC = AC/(AC/BC) =AC/cosC.
That's the way we've done!
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2 answers:
Answer:
960
Step-by-step explanation:
if each triangle is .25 square centimeters, and you can double them up to make a square that is .5 square cm, you only have to find the area of the grid by doing and then multiply it by four to get 960. it gets multiplied by four because if you double up the trianglse, its multipling the ammount used by two, and then you have each is .5 cm, which you can then make into one whole square cm by doubling up again, or just multiply by four.
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Answer: Pr(test positive ) = 0.38.
Step-by-step explanation:
Since we have given that
Probability of getting a certain disease = 0.2
Probability of not getting a certain disease = 1-0.2 = 0.8
Probability that test turns a positive results for those with the disease = 90% = 0.90
Probability that turns a negative results for those without diseases = 75% = 0.75
Probability that turns a positive results for those without diseases = 1-0.75=0.25
So, Probability of test positive is given by
P(having diseases) . P(test positive) + P(not having diseases) . P(test positive)
Hence, Pr(test positive ) = 0.38.