Let $r$ be the set of primitive $42^{\text{nd}}$ roots of unity, and let $s$ be the set of primitive $70^{\text{th}}$ roots of unity. how many elements do $r$ and $s$ have in common?

The measure of the angles of triangle abc are given by the expressions in the table. angle-measure a-48 degrees b-(6x-28)degrees c- (2x) degrees find the value of x. then find the measures of angles b and c. enter your answers in the boxes. x= m m

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

The figure shows the front side of a metal desk in the shape of a trapezoid. what is the area of this trapezoid? 10 ft²16 ft²32 ft²61 ft²