The product of three and a square number is twice the sum of the number and four

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?

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

How do you write 0.5% as a fraction