Jason rolls the die 14 times. What is the experimental probability that he will roll a 2

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Can anyone explain to me how to do this? anything will .

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?