Solve the system of equations - x + 3y = –6 and 4x + 7y = -33
by combining the equations.

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by