If ΔPQR ∼ ΔBST which of the following proportions are true? I. PQBS=QRST II. PQBT=PRBS

III. STTR=BSBT IV. BTPR=STQR

A. I, II, III, IV

B. I, III, IV

C. I, II, IV

D. I, II, III

E. II, III, IV

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

3.4a=57.8 what is the the value of a