yavalos81
17.11.2020 •
Mathematics
How much will you pay for a used Samsung S20 which is sold for $170 with a discount of 20% if you are a "Remote Only" student?
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Ответ:
you find 20% of 170 by multiplying 0.2*170=34 then you’d subtract 170-34 to get 136
Ответ:
Answer : The center and radius of the circle is, (1, 3) and 6 respectively.
Step-by-step explanation :
The center-radius form of the circle equation in the format as:
where,
x and y are the variables.
h and k are the coordinates of circle.
r is the radius of circle.
As we are given the quadratic equation:
Now we have to convert this equation into center-radius form of the circle equation.
We are adding 1 and 9 on both side of equation.
As we know that,
So,
and,
Thus, the equation will be:
The center-radius form of the circle equation in the format as:
From this we conclude that,
h = 1
k = 3
As, r² = 36
So, r = 6
Center of the circle = (h, k) = (1, 3)
Radius of the circle = r = 6
Thus, the center and radius of the circle is, (1, 3) and 6 respectively.