Step-by-step explanation:
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radius = 7
the equation of a circle in standard form is
(x-a)² + (y-b)² = r²
where (a, b) are the coordinates of the centre and r is the radius
To obtain this form ' complete the square ' on both the x and y terms
x² + 2(1)x + 1 + y² + 2(3)y + 9 = 39 + 1 + 9
(x+1)² + (y+3)² = 49 ← in standard form
with centre (1, 3) and r = √49 = 7
X=0 There is no factoring this equation.
Answer:
D
Step-by-step explanation:
The correct answer choice is D. Note how BC and MN appear to have nearly the same lengths, whereas none of the other statements are true. Note, also, that this diagram is not to scale; you could make the problem easier by redrawing MNOP so that it has the same orientation as does ABCD and the same corresponding side lengths.
