Which equation is equivalent to x + 3y – z = 3?

3x + 6y – 3z = 6

4x + 12y – 4z = 12

2x + 4y – 2z = 8

2x + 3y – 4z = 12

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?