A=1/2(a+b)h work out the value of A when a=7, b=6 and h=10

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?

Select the two pairs of figures that are similar.

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re