Calculate the volume of the solid, bounded by the surfaces: z=4x2 +4y2; z=x2+y2; z=4

Lorenzo ate 2/5 of his bag of almonds. his 4 friends ate equal shares of the remaining bag of almonds?

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me