A contractor needs 54 square feet of brick to construct a rectangular walkway. The length of the walkway is 15 feet more than the width. Determine the length and the width of the walkway.

What values of c and d make the equation true?

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?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3