Which values of x and y will satisfy y = 5x and 12x + 9y = 60? . a. . x = 1, y = 19 . b. . x = 35 y= 20/19. c. . x = 1/20 y = 1/90. d.. x = 20/19 y = 100/19. e.. x = 19 y = 50/19

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.