3 years ago

White blood cells, I Helper cells and antibodies are all a part

Mathematics

1 answer:

ioda3 years ago

8 0

Answer:

D.)

Step-by-step explanation:

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Explain how the formula for the volume of a cone is derived

sattari [20]

Answer:

The volume of a cone is 1 3 π r 2 h \frac { 1 } { 3 } \pi r ^{ 2 } h 31πr2h, where r denotes the radius of the base of the cone, and h denotes the height of the cone.

Step-by-step explanation:

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3 years ago

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AleksAgata [21]

Answer:

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Step-by-step explanation:

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I worked it out as shown:

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3 years ago

A credit card contains 16 digits between 0 and 9. However, only 100 million numbers are valid. If a number is entered randomly,

marusya05 [52]

Answer:

$P(valid) = 1 * 10^{-8}$

Step-by-step explanation:

Let us first find the number of possible credit card numbers that can be formed with the numbers 0 - 9.

We want to form a 16 digit number out of 10 digits, so, we have:

$N = 10^{16}$

There are $10^{16}$ numbers that can be formed.

There are only 100 million valid numbers ( $100 * 10^6 = 10^8$ ). Let the number of valid numbers be n.

Therefore, the probability of picking a number that is valid is:

P(valid) = n / N

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brilliants [131]

the first option is the correct one

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