In a por, m2 p= 60°, m_ q = 30°, and mr= 90°. which of the following
statements about a pqr are true?
check all that apply.
a. pq = v3 pr
b. qr = v3.po

pq = 2 • pr
d. qr = 2 • pr
e. qr = v3 • pr
f. pr= v2.pq

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start