eausure of angles x and y are the same, x degrees. The measure of angle z is twice the measure of angle y.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

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.