Is the following shape a parallelogram? if so, which condition proves it ?
a. both pairs of opposite sides are parallel ( definition )
b. one pair of opposite sides are parallel and congruent
c. both pairs of opposite sides are congruent
d. both pairs of opposite angles are congruent
e. one angle is supplementary of both sides of its consecutive angles
f. the diagonals bisects each other

Apple pie is removed from 350 degree oven. temperature of the pie t minutes after being removed id given by the function t(t)=72+268e-0.068t

The tree filled 3/4 of a cup in 1/2 and hour at what rate does syurup flow from the tree

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