Find circumference of the following circle.
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The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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.