Which of the following is a condition for a pure tessellation?
a. the shapes must be polygons.
b. more than one shape can be used.
c. the shapes can overlap.
d. only one shape can be used.

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height