In a vertical stack of firewood, each row has 4 fewer logs than the row below it. if there are six rows total, and the top row has 50 pieces of wood, how many pieces are on the bottom row?

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 segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.