Which statement is true about a negative number and its additive inverse?
A. Their sum is one.
B. They are on opposite sides of zero on the number line.
C. They are always reciprocals of each other.
D. Their sum is never zero.

The number of possible solutions of a polynomial can be found by looking

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).