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• which of the following examples of using the internet to conduct research meets the federal definition of research with human subjects? gathering data to supplement an oral history project about a local civil rights activist. the activist passed away while the researcher was in the process of conducting in-person interviews with the individual’s social network. conducting an on-line focus group with cancer survivors to determine familial support systems. the researcher also invites subjects’ significant others to be a part of the focus group. downloading a publicly available dataset that includes high school students’ academic achievement rates. the data are in aggregate and were derived from multiple school districts from different states. analyzing a website visitor report from several pro-anorexia blogs to determine the popularity of each blog. access to the blogs is not restricted.
  
• δxyz was reflected over a vertical line, then dilated by a scale factor of one-half, resulting in δx'y'z'. which must be true of the two triangles? select three options. △xyz ~ △x'y'z' anglexzy ≅ angley'z'x' yx ≅ y'x' xz = 2x'z' mangleyxz = 2mangley'x'z'
  
• read the sentence. tension erupted in the room when it was revealed that the villain knew that the spy withholding information. which is the best revision of the sentence? tension will erupt in the room when it was revealed that the villain knew that the spy withholding information. tension erupted in the room when it reveals that the villain knew that the spy withholding information. tension erupted in the room when it was revealed that the villain will know that the spy withholding information. tension erupted in the room when it was revealed that the villain knew that the spy withheld information.
  
• factor the trinomial 7x2 – 3x – 4. which pair of numbers has a product of ac and a sum of b? what is the factored form of the trinomial?
  
• fill in the blank with the conjunction that best completes the sentence. yo hablo español _____ no hablo inglés. por tanto ni pero o
  
• the audience for president reagan’s address at moscow state university included young college students. this is important because one of the purposes of the speech was to encourage new ideas, and young people are less likely to accept new ideas. encourage new ideas, and young people are more likely to accept new ideas. entertain listeners with stories of america, and young people enjoy stories. entertain listeners with stories of america, and young people like america.
  
• freshwater can be renewed, but environmentalists consider it nonrenewable. why is there a contradiction in classification?
  
• if k(x) = 5x – 6, which expression is equivalent to (k + k)(4)? 5(4 + 4) – 6 5(5(4) – 6) – 6 54 – 6 + 54 – 6 5(4) – 6 + 5(4) – 6
  
• in what ways did china change economically under the four modernizations program? check all that apply. china became more open to foreign trade and investment. the government allowed some private ownership of business. all planning of the economy was done by the government. all businesses switched from public ownership to private ownership. the government designated certain areas as special economic zones. the economic system completely changed from communism to capitalism.
  
• select the best grammatically correct term to fill in the blank: él no ________ chino. toma habla ve espera