Point I is on line segmentHJ‾HJ . Given HI=x, HI=x, IJ=2x+9,IJ=2x+9, and HJ=4x, HJ=4x, determine the numerical length of IJ‾.IJ .

Can someone me and do the problem plz so i can understand it more better

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?