3 years ago

3.

Mathematics

1 answer:

finlep [7]3 years ago

6 0

$black\ cars-20\\white\ cars-5\\\\so\ difference\ is:\boxed{20-5=15}\leftarow\ answer\ \boxed{\boxed{C}}$

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Since the beginning of the year, 1982 people have come into a blood bank to donate blood and 340 were found to have high blood p

Alecsey [184]

Answer:

0.1715

Step-by-step explanation:

From previous experience 340/1982 is the past probability that a person has high blood pressure.

The division of that leads to 0.1715 that the next person will have high blood pressure. That number is roughly (very roughly) 1 person in 6. So if 6 people come in 1 will have high blood presure.

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3 years ago

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3 years ago

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Let, Unknown number = x

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3 years ago

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1 year ago