Find the area of the shaded region in the figure below, if the radius of the outer circle is 10 and the radius of the inner circle is 8. Keep your answer is terms of pi.

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual 

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.