Abuliding 78ft high casts a 195ft shadow on sarah. sarah casts a 10ft shadow. how tall is sarah?

Which of these choices show a pair of equivalent expressions?

In the 30-60-90 triangle below side s has a length of and side r has a length

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?