Will mark as bianleast Which figure must be a rhombus?

a quadrilateral with four right angles

a parallelogram with four congruent angles

a parallelogram with four congruent sides

a quadrilateral with congruent diagonals

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.)

For each proportion find the unknown number x 1/5/8=×/15

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827