Answer:
Step-by-step explanation:
Calculate z-score firstly
z-score = (x-mean)/SD = (2.75-2.5)/0.25 = 0.25/0.25 = 1
P( x greater than or equal to 2.75) = P(z greater than or equal to 1)
= 1 - p(z <1)
P(z<1) from table = 0.84134
1-p(z<1) = 0.15866 or 15.866%
By identifying the radius and the center, we concluded that the equation is something like:

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How to write the equation of the circle?</h3>
For a circle centered on the point (a, b) with a radius R, the equation is:

So first we need to identify the center, we can see that it is: (2, 1.5)
And the radius is the distance between the center and the edge.
R = 1.8 (measured with a ruler, respecting the notation of the graph).
Then the equation of the circle is something like:

If you want to learn more about circles:
brainly.com/question/1559324
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Answer:
d
Step-by-step explanation:
It’s letter d
since m and n are parallel the measure of b will be equivalent to the angle 35 degrees