A regression model involved 5 independent variables and 136 observations. The critical value of t for testing the significance of each of the independent variable's coefficients will have a. 131 degrees of freedom b. 135 degrees of freedom c. 130 degrees of freedom d. 4 degrees of freedom

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

- (2, -7)

- lines r and s and lines t and u must be parallel