Find the missing dimension Use the scale 1:5

Model: 3ft
Actual: ?

Which expression is the factored from of 2/3x + 4?asap

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

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.