The circumference of a circle is 42pie cm. Find the diameter, the radius, and the length of an arc of 90 degrees.

A. 42 cm; 84cm; 5.3pie cm.
B. 21 cm; 42 cm; 5.3pie cm.
C. 42 cm; 21 cm; 10.5pie cm.
D. 84 cm; 21 cm; 135pie cm.

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15