Atree is 3,212 years old how can you express this age in scientific notation with the lowest level of precision

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

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