(a) What percentage of calls last between 2 and 3 minutes? Percent = percent (b) What percentage of calls last 2 minutes or less? Percent = percent (c) What percentage of calls last 4 minutes or more? Percent = percent (d) What is the cumulative distribution function, P(t)P(t)? P(t)=P(t)=

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12475909

i found two solutions,   n = 2 • ± √3 = ± 3.4641

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the correct option is 2.

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according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

jeff jeff

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