A square can be changed into a rectangle by increasing the length of the square by 5 units and increasing the width by 3 units. Which expression represent the are of the rectangle in squares units? A)x2+8x+15
B)x2+15
C)2x+8
D)2x+15

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

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