If x² + xy = 62, y2 + xy = 82 then find the positive value of x+y.
A) 11 B) 12
C) 13 D) 14

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

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?