Use spherical coordinates. (a) Find the centroid of a solid homogeneous hemisphere of radius 2. (Assume the upper hemisphere of a sphere centered at the origin. Use the density function rho(x, y, z) = K. ) (x, y, z) =

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.