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25.10.2021 •
Mathematics
Take another guess: A student takes a multiple-choice test that has 8 questions. Each question has four choices. The student
guesses randomly at each answer. Round the answers to three decimal places.
Part 1 of 2
(a) Find P(3)
P(3) =
)
Part 2 of 2
(b) Find P (More than 1).
P(More than 1)
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Ответ:
The radius is 8.5
Step-by-step explanation:
Mathematically, the radius of a circle is the distance from the center of the circle to its circumference
Thus, as we have here;
The two marked lengths are radii of the inner inscribed circle and this means that they are equal in length
thus;
x + 6 = 5x-4
5x - x = 6 + 4
4x = 10
x = 10/4
x = 2.5
Now, to get the radius length, substitute the value of x in any of the lengths
from x + 6
2.5 + 6 = 8.5