It is projected that the population of the united states in 2050 will be 419,854,000. write that number in expanded notation using exponents.

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?