Line segment JK shown at the right, is reflected over the y-axis to form the line segment J'K'. Rhoda concludes that the y-axis is a perpendicular bisector of KK' and Andy concludes that the lines segments JK and J'K' are parallel. Whose conclusion is correct?

Which linear inequality is represented by the graph? !

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.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.