Are the expressions 2x+8 and 2(x+4)+4 equivalent

Mathematics

2 answers:

andriy [413]3 years ago

4 0

Answer:

Step-by-step explanation:

2x+8 2(x+4)+4

2(x)+2(4)+4

2x+8+4

2x+12

tensa zangetsu [6.8K]3 years ago

3 0

Answer:

Step-by-step explanation:

2(x+4)+4 distributing the 2 comes out as 2x+8+4 and then simplified comes out to 2x+12 which is not equal to 2x+8 so your answer is no.

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DaniilM [7]

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4 years ago

17. Northern Airlines has a reputation for being on time 86% of the time.

m_a_m_a [10]

Answer:

85.33% probability that a Northern Airlines plane will be on time for at least four of its next five flights.

Step-by-step explanation:

For each Northern Airlines flight, there are only two possible outcomes. Either it is on time, or it is not on time. The probability of a flight being on time is independent of other flights. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$