Fifty students were eating lunch in the school cafeteria the ratio of boys to girls was 25: 25 mrs. white asked him to explain what the ratio met kim said make that 25% of the students in the cafeteria were boys explain why kim is incorrect

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?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

[15 points, algebra 2]simplify the complex fraction and find the restrictions.