Find x and y such that, 2ix + iy=2+5i and 3i^3x - 2i^2y=9-11i

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

3x = 729 solve for x plz . it's urgent. will mark