Is 0 a positive number for math quizzes?

Secant be and cf intersect at point d inside a what is the measure of cde

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)

Apossible wavelength for the color blue is 0.000000492 meter. which of the following is a reasonable estimate for this wavelength for the color blue? a. 5 × 10-6 m b. 5 × 107 m c. 5 × 10-7 m d. 5 × 106 m