Apattern has five blue triangles to every 80 yellow triangles what is the ratio of blue triangles to all triangles

Classify the polygon by its number of sides. state whether the polygon appears to be regular or not regular. a.heptagon, regular b. heptagon, not regular c. octagon, regular d. octagon, not regular

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.