Answer:
and 
Step-by-step explanation:
We will take numbers to one side and variables to one side eliminate the "Square" with "Square Root" and solve for the variable x. The process is shown below:
Now, we need to reduce the radical by using the rule shown below:
Now,
The correct answer is and
<u>Note:</u> squaring positive and negative makes the same answer
Answer:
3.6
Step-by-step explanation:
Hello :
f(r) = πr².... r <span> <span>><span> 0
</span></span></span>the domain is : <span>] 0; + ∞[<span> </span></span>
So the pattern is x,y so the left is x and the right is y. Just graph it
The z score that has 70.54% of the distribution area is 9.92
<h3>What is a z-score?</h3>
The z-score is a numerical measurement used in statistics to refer to how much a given value differs from the standard deviation.
For the random variable x, the z-score is;
z = (x - 11)/2
therefore, 70.54% of the area under the curve lies to the right of x,
then the area to the left of x is;
100 - 70.54 = 29.46%
From the standard table, a z-score of -0.54 will yield an area of 29.46% to the left of x.
Therefore, we get;
(x - 11)/2 = -0.54
x - 11 = -0.54(2)
x = 9.92
The z score is 9.92
Learn more about z score here;
brainly.com/question/4167122
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