Cos pi/18 cos 3 pi/18 cos 5 pi/18 cos 7 pi/18 =3/16

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares