If W = 8 feet, X = 5 feet, Y = 13 feet, and Z = 11 feet, what is the area of the object?

How do you solving the solution of each system using elimination?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.