Acircle k(o) with the radius r is given. line ab tangent to circle k(o) at b. find ab, if oa= 2 cm, and r=1.5 cm.

Find the sum to the equation 3+6+9+

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?

10% of 1,900,000. show me how you got the answer