Which is the graph of fx x2 2x 3
1 answer:
In the picture we can see the graph represents of the function f(x)=x²-2x+3 that is curve graph.
Given that,
We have to find the graph represents the function f(x)=x²-2x+3.
We know that,
The quadratic function is f(x)=x²-2x+3.
This is a vertical parabola open downward
The vertex is a maximum
We know,
A vertical parabola's equation in vertex form is equal to
y= a(x-h)²+k
where
a is a coefficient
(h,k) is the vertex
Here
a=1
(h,k)=(0,3) is vertex
The y-intercept is the point (0,3) is value of y when the value of x is equal to zero (is the same point that the vertex)
The x-intercepts are the points is values of x when the value of y is equal to zero
Therefore, In the picture we can see the graph represents of the function f(x)=x²-2x+3.
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Your answer is no solution (because a negative square root doesn't exist)
first, you divide all sides by five and then take b, half it then square it
first, you divide all sides by five and then take b, half it then square it
Answer:
For this case we want to find this probability:
And we can use the z score formula to see how many deviation we are within the mean and we got:
And for this case we know that within 3 deviation from the mean we have 99.7% of the values and that's the answer for this case.
Step-by-step explanation:
Previous concepts
The empirical rule, also known as three-sigma rule or 68-95-99.7 rule, "is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ)".
Let X the random variable who represent the number of phone calls answered.
From the problem we have the mean and the standard deviation for the random variable X.
So we can assume
On this case in order to check if the random variable X follows a normal distribution we can use the empirical rule that states the following:
• The probability of obtain values within one deviation from the mean is 0.68
• The probability of obtain values within two deviation's from the mean is 0.95
• The probability of obtain values within three deviation's from the mean is 0.997
Solution to the problem
For this case we want to find this probability:
And we can use the z score formula to see how many deviation we are within the mean and we got:
And for this case we know that within 3 deviation from the mean we have 99.7% of the values and that's the answer for this case.