During 4 days the price of the stock of pev corporation went up 1/4 of a point down 1/3 of a point and up 7/10 of a point what is the net change

How do you divide 9/4 divided by 10/3

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?

What is the prime factorization of 23 ?me with this question