Answer:
The probability that a call last between 4.2 and 4.9 minutes is 0.4599
Step-by-step explanation:
Let X be the length in minutes of a random phone call. X is a normal distribution with mean λ=4.2 and standard deviation σ=0.4. We want to know P(4.2 < X < 4.9). In order to make computations, we will use W, the standarization of X, given by the following formula
We will use 
, the cummulative distribution function of W. The values of are well known and the can be found in the attached file
We conclude that the probability that a call last between 4.2 and 4.9 minutes is 0.4599
Answer:
No x-intercept/Zero
Step-by-step explanation:
Substitute f (x)=0
Solve the equation
There is no x-intercept/zero
Answer:
x=6 , y=17
Step-by-step explanation
3x-1=2x+5
+1 -2x
x=6
plug in 6 for x to solve y
Because A is in between the points just add the points together. so it would be 26+50=76
Which means the answer is option D.
Answer:
See explanation
Step-by-step explanation:
You have not provided the options to help us give you a specific answer.
If a quadratic function is written in the form
Then (h,k) is the vertex, and 'a' is a constant.
For instance
has vertex at (2,3).
Also, an absolute function in the form
has vertex at (h,k).
This means
also has vertex at (1,3).
I hope this explanation is helpful.
