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ale4655 [162]
3 years ago
7

Need help with questions 18,20, and 22 please and thank you

Mathematics
1 answer:
Tatiana [17]3 years ago
6 0

Answer:

18. x² + x - 4

20.  \frac{x^{2} +2x-3}{x+1} or  x + 1 - \frac{4}{x+1}

22. x² + 2x - 2

Step-by-step explanation:

For some reason my work was unable to be submitted so please see attachment for detailed explanation

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Step-by-step explanation:

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Let z denote a random variable that has a standard normal distribution. Determine each of the probabilities below. (Round all an
Lorico [155]

Answer:

P(Z < 2.37) = 0.9911.

Step-by-step explanation:

We are given that Let z denote a random variable that has a standard normal distribution.

Let Z = a random variable

So, Z ~ Standard Normal(0, 1)

As we know that the standard normal distribution has a mean of 0 and variance equal to 1.

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

where, \mu = mean = 0

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Now, the probability that z has a value less than 2.37 is given by = P(Z < 2.37)

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The above probability is calculated by looking at the value of x = 2.37 in the z table which has an area of 0.9911.

4 0
3 years ago
What is the value of x using the two transversal proportionality corollary? 9cm 11cm 22cm 27cm
almond37 [142]
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3 years ago
What's the equation of a circle whose diameter is 24 and whose center is at the origin
jekas [21]

Answer:

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where the center is at (h, k) and its radius is r. Not sure what the equation would be sorry.

Step-by-step explanation:

3 0
3 years ago
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