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REY [17]
3 years ago
9

What value makes the equation 11-3x=-7 true?

Mathematics
2 answers:
MakcuM [25]3 years ago
5 0
6 would be the answer
o-na [289]3 years ago
3 0
The answer is x=6. 11-3x6=-7
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Pairs of expressions are given. Select the pairs that are equivalent .
mafiozo [28]

Answer:

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4 0
2 years ago
How many solutions does this system have 2x + y = -1 -4x - 2y = -5
postnew [5]
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6 0
3 years ago
Suppose that the probability that a person will develop hypertension over a life time is 60%. Of 13 graduating students from the
Savatey [412]

Answer:

The mean number of the students who develop hypertension over a life time is 7.8.

Step-by-step explanation:

For each person, there are only two possible outcomes, either they will develop hypertension, or they will not. The probability of a person developing hypertension is independent of any other person, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

Suppose that the probability that a person will develop hypertension over a life time is 60%.

This means that p = 0.6

13 graduating students from the same college are selected at random.

This means that n = 13

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E(X) = np = 13*0.6 = 7.8

The mean number of the students who develop hypertension over a life time is 7.8.

5 0
2 years ago
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