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Vilka [71]
3 years ago
5

The first side of a triangle measures 4 in. less than the second side, the third side is 3 in. more than the first side, and the

perimeter is 15 in. How long is the third side? If s represents the length of the second side, which of the following represents the length of the third side?
Mathematics
1 answer:
stepladder [879]3 years ago
8 0
A)4+3+x=15
x=8 so the 2nd side is 8.
b) s-5 is the answer because the 8-5=3.

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we have that we can solve it by means of binomial, in this case m = 25. Also the probability of head is 50%. we need to know when it falls 7 times, therefore x = 7

the formula is:

P (x) = mCx * p ^ x * q ^ (m-x)

we know that p is 0.5 therefore q is equal to 0.5, replacing:

P (7) = 25C7 * 0.5 ^ 7 * 0.5 ^ (25-7)

P (7) = 25! / (7! * (25-7)!) * 0.5 ^ 7 * 0.5 ^ (25-7)

P = 0.0143

that is, the probability is 1.43%

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