A chemist has a container of 12 percent peroxide solution and a container of 20 percent peroxide solution. She needs to mix the two solutions to create 100 mL of a 14 percent solution. If x represents the amount of 12 percent peroxide solution and y represents the amount of 20 percent peroxide solution she needs, which matrix equation can determine the amount of each solution she needs to make the 14 percent solution?
Answer
A
the 2 by 2 matrix row 1, 1 1 row 2, 0 point 1 2 0 point 2 the 2 by 1 column matrix x y is equal to the 2 by 1 column matrix 14 100
B
the 2 by 2 matrix row 1, 0 point 1 2 0 point 2 row 2, 1 1 the 2 by 1 column matrix x y is equal to the 2 by 1 column matrix 0 point 1 4 100
C
the 2 by 2 matrix row 1, 1 1 row 2, 0 point 1 2 0 point 2 the 2 by 1 column matrix x y is equal to the 2 by 1 column matrix 0 point 1 4 100
D
the 2 by 2 matrix row 1, 0 point 1 2 0 point 2 row 2, 1 1 the 2 by 1 column matrix x y is equal to the 2 by 1 column matrix 14 100