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3 years ago

What is 40% of 85? (with an explanation)

Mathematics

2 answers:

SVEN [57.7K]3 years ago

4 0

Answer:

34 is 40% of 85

Step-by-step explanation:

we just need to muliply

so we move the decimal 2x over to the left and we are left with 0.4

so we must multiply 85 * 0.4 = which is 34

larisa [96]3 years ago

3 0

Answer:

34 (explanation below)

Step-by-step explanation:

Convert percent to decimal by moving the decimal in the number 40 over 2 places to the left and drop the sign.

.40

Now multiply 85 by .40 = 34

You can ALSO do in your head by thinking 10 percent (8.50) and adding it 4 times to find 40 percent. It's a lot faster!

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Answer:

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Step-by-step explanation:

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Hypergeometric distribution:

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In which:

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Combinations formula:

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In this question:

12 resistors, which means that $N = 12$

3 defective, which means that $k = 3$

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To find an specific probability, that is, of x defectives:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

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Answer:

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