Estimate the period of the periodic solutions that are close to the critical point in part (a). (choose x(0) = 9 and y(0) = 6. use a cas to estimate the period and round your answer to two decimal places.)

Determine which postulate or theorem can be used to prove that lmn =nmo

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?