Which pair of angles are vertical angles?

∠krc and ∠crh

∠kre and ∠ert

∠mrc and ∠krm

∠ert and ∠mrc

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test