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8_murik_8 [283]
3 years ago
15

How many even 2-digit positive integers can be written using the numbers 2, 4, 5, and 8?

Mathematics
1 answer:
BartSMP [9]3 years ago
7 0

Answer:

12

Step-by-step explanation:

To have an even integer the number's endian has to be an even number. Consider the 2-digit positive number like _ _ and place the number of possible options out of four total options in each blank space. We have 3 even options, so we can fill the endian blank like this _ <u>3</u>

Since the first digit can be any number, therefor, we have 4 options for the first blank space <u>4</u> <u>3</u>. Just multiply the two numbers and you have the answer.

22, 24, 28, 42, 44, 48, 52, 54, 58, 82, 84, 88

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The distribution of income tax refunds follow an approximate normal distribution with a mean of $7010 and a standard deviation o
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Answer:

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Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

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In this problem, we have that:

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