When computing a correlation coefficient, if you have the degrees of freedom of 55, your sample size must be:

Every rhombus is a square. true false

What is the slope of a line that is perpendicular to y = 3x + 1

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c