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Mashutka [201]
3 years ago
13

Which of the following best describes the algebrate expression 15x+8

Mathematics
1 answer:
tangare [24]3 years ago
6 0
<span>fifteen times the sum of a number and eight

</span>
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A rectangle has a perimeter of 150 feet and a base of 45 feet. What is the height?
frez [133]

Answer:

30

Step-by-step explanation:

45+45 = 90

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Find the percent of change from the first value to the second. 20 ; 80
Lemur [1.5K]

Answer:

Percent Change Formula: [(new - old)/old] * 100

Step-by-step explanation:

New - old

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Difference between new - old divided by old

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Check your answer

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3 years ago
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3 years ago
In an article about the cost of health care, Money magazine reported that a visit to a hospital emergency room for something as
baherus [9]

Answer:

Probability that the cost will be less than $500 is 0.95994 .

Step-by-step explanation:

We are given that Money magazine reported that a visit to a hospital emergency room for something as simple as a sore throat has a mean cost of $348 with a standard deviation of $87.

Let X = cost of a hospital emergency room visit for this medical service

So, X ~ N(\mu=348, \sigma^{2} =87^{2})

The standard normal z score distribution is given by;

              Z = \frac{X-\mu}{\sigma} ~ N(0,1)

(a) Probability that the cost will be less than $500 = P(X < $500)

    P(X < 500) = P( \frac{X-\mu}{\sigma} < \frac{500-348}{87} ) = P(Z < 1.75) = 0.95994 {from z table}

Therefore, the probability that the cost will be less than $500 is 0.95994 .

                                               

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3 years ago
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