Which equation is equivalent to: 11r+4=55
a.- 11r=55+4
b.- 11r=55-4
c.- -11r=55-4
d.- -11r=55+4

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

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.