Dna (deoxyribonucleic acid) is the basic building block of reproduction in living things. a dna chain is a sequence of chemicals called bases. there are four possible bases: thymine (t), cytosine (c), adenine (a), and guanine (g). (a) how many three-element dna chains are possible? dna chains

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

Identify the parent function that can be used to graph the function f(x)=3(x-9)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