The cost of an angelfish and a goldfish was $8. Adam bought 6 angelfish, 2 goldfish, and a swordtail for $34. If
the total cost of an angelfish and a swordtail was $10.50,
what was the cost of a goldfish?

The total number of dental clinics total for the last 12 months was recorded

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

If wxyz is a square, which statements must be true?