Which construction would be the best substitute for a straightedge
A. Ruler
B. Protractor
C. compass

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?