The perimeter of the rectangle below is 204 units find the length of side ab

Bring the fraction a/a-4 to a denominator of 16-a^2

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

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.