6. Angle C is half the arc, so 60 degrees,
B = 180-A-C = 180-42-60 = 78 degrees
Answer: C
7.
Complete the square.
[tex]x^2+y^2 + 8x-8y+24 = 0[/tex]
[tex]x^2 + 8x + y^2-8y = -24[/tex]
[tex](x^2 + 8x + 16) + (y^2 - 8y + 16) = -24 + 16 + 16[/tex]
[tex](x+4)^2+(y-4)^2=8[/tex]
A. radius=4; nope r=√8
B. r=2√2 yes that's the same as √8. SELECT B
C. No the center is at (-4,4)
D. Yes, SELECT D
E. Yes, SELECT E
Answer: B D E
