Witch atom has 12 protons A carbon (C)
B nitrogen (N)
C sodium (Na)
D magnesium (Mg)

Also I didn’t mean to click a answer on there

Find the value of the cosine for angle a

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?

Which math sentence can be used to determine if the triangle is a right triangle?