Evaluate the triple integral of f(x, y,z) = z(x^2+y^2+z^2)^-3/2 over the part of the ball x^2+y^2+z^2=4 defined by z>/=3.5

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

How do i i solve this equation? -18 = x/3 + 3

What number gives you a irrational number when added to 2/5