There are 12 inches in 1 foot. What fact family would you use to find the number of inches in 2 feet?

Mathematics

1 answer:

motikmotik3 years ago

5 0

Answer:

2*12 = 24

12*2 = 24

24/2 = 12

24/12 = 2

Step-by-step explanation:

You have two groups called feet. In each group (foot), you have 12 inches. You would use the fact family 2, 12, and 24 to find the number of inches in 2 feet because you have 2 feet, each foot contains 12 inches, and 2*12 is 24.

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For one toss of a certain coin, the probability that the outcome is heads is 0.6. If this coin is tossed 5 times, which of the f

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Answer:

The probability is 0.33696

Step-by-step explanation:

The probability that the outcome will be heads x times is calculated using the following equation:

$P(x) = nCx*p^{x} *(1-p)^{n-x}$

nCx is calculated as:

$nCx=\frac{n!}{x!(n-x)!}$

This apply for variables that follows a binomial distribution. In which we have n independent and identical events with two possibles results: success and fail with a probability p and 1-p respectively.

So, In this case, n is equal to 5, and p is equal to 0.6 because we are going to call success the event in which the outcome of the coin is head.

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P = P(4) + P(5)

Where P(4) is:

$P(4) = 5C4*0.6^{4} *(1-0.6)^{5-4}$