Discover Questions

In one mole of the compound iron(III) oxide,
what fraction of the total number of ions is
the oxygen ion? How long does Equazen supplement really take to make effect in adults with inattentive adhd? Has someone tested it? Find all solutions to the following system of nonlinear equations.
(x − 2)^2 + y ^2 = 20
(x + 2)^2 + y^ 2 = 20? Verify that M(u,v)=A +u(B-A) +v(C -A) ( A,B,C vectors) is a parametric representation of surface of the triangle A(1,0,0) B(0,-1,2) C(0,2,1)? Diameter of a wheel 80cm. If the wheel rotates through an angle of 200degrees, how many cm does it move? Show steps please!?