If AA and BB are 9×59×5 matrices, CC is a 3×93×9 matrix, DD is a 5×95×9 matrix, and EE is a 9×39×3 matrix, which of the following are defined? A. B+AB+A B. 2A2A C. CBCB D. BABA E. ADAD F. B−CB−C

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

225/100 of last years cost. write each fraction as a decimal and as a percent

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000