O the choices into the boxes to correctly classify each polygon. heptagon
hexagon
octagon
pentagon
quadrilateral
nonagon

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. determine whether this is a physical change or a chemical change. explain your answer

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant