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Pie
2 years ago
8

Go to lesson page Problem If you flip three fair coins, what is the probability that you'll get a head on the first flip, a tail

on the second flip, and another head on the third flip?
Mathematics
1 answer:
ikadub [295]2 years ago
3 0
The probability of any particular sequence of N flips of a fair coin is 2^(-N).

Your probability of the given sequence of 3 coin flips is 
   2^-3 = 1/8
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Is -2/3(12b - 6 + 9b - 18) equivalent to 2b(b + 8)? Show your work.
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Answer:

No, they are not equivalent

Step-by-step explanation:

\frac{-2}{3}(12b - 6 + 9b - 18) = \frac{-2}{3}(12b + 9b - 6 - 18)\\\\=\frac{-2}{3}(21b - 24)\\\\  = \frac{-2}{3}*21b -24*\frac{-2}{3}\\\\= -2*7b + 8*2\\\\= 2( -7b + 8)

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3 years ago
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2 years ago
What is the maximum percentage of net spendable income that should be set aside for transportation?
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3 years ago
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Scores on the Wechsler intelligence quotient (IQ) test are normally distributed with a mean score of 100 and a standard deviatio
rosijanka [135]
15.87% of the population does not meet the minimum standards.

We use z-scores to find this probability:

z=(X-μ)/σ = (85-100)/15 = -15/15 = -1

Using a z-table (http://www.-table.com) we see that the area to the left of, less than, this is 0.1587.  This is 15.87%.
5 0
3 years ago
two times a number plus three times a number equals 13. The sum of two numbers is 7. what are the numbers? write the numbers for
wel

Answer:

4

Step-by-step explanation:

2+ 3 = 5 \\13-5= 8\\8 divided by 2=4 \\x=4

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