Rigid Body ABCD is pinned at joint A, has a roller at joint…

Rigid Body ABCD is pinned at joint A, has a roller at joint B, and an applied moment in the direction shown at D.  Use the following lengths (cm): a = , b = , c = , d =.  If M = Nm, determine the magnitude of the reaction force (N) at A.  Enter your answer to one decimal place.  

A company installs 5000 light bulbs, each with an average li…

A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the percentage of bulbs that can be expected to last the period of time. Round to the nearest hundredth, if necessary.Less than 460 hours