What symbol makes the sentence true? -3½ ? -3 5/9
a) ≥

b) ≤

c) <

d) >

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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.