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Mariana [72]
3 years ago
9

X + 3y = -11 y = -1 what does x equal to

Mathematics
2 answers:
KonstantinChe [14]3 years ago
6 0
X+3(-1)= -11
3×(-1)= -3
x+(-3)= -11
x-3= -11
x= -11+3
x= -8
julia-pushkina [17]3 years ago
6 0
The answer to your question is x= - 14
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Answer:

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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

           \sigma = standard deviation = 1

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

        P(Z < 2.37) = P(Z < \frac{2.37-0}{1} ) = P(Z < 2.37) = 0.9911

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.

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I understand I need help on this.
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