lisa has played in 6 soccer matches. Her brother josh has played in 18 soccer matches. lisa says josh has played in 12 times as many matches as she has

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Solve the equation x/4 - 5= -8 -27 -12 -7 12

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.