1. Name the Center and the radius of the following circle: *
x^2+y^2=49

Center (0, 0,) Radius 7
Center (0, 0), Radius -7
Center (0, 0), Radius -49
Center (0,0) Radius 49

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?