Tutor profile: Riley M.
Solve: 2x + 3y = 14 and 3x − 4y = 4
Step 1. Pick one of the equations and get a variable alone on one side of the equal sign. ex: 3x − 4y = 4 --> x = (4 + 4y)/3 Step 2. Plug that answer into the other equation. ex: 2x + 3y = 14 --> 2[(4 + 4y)/3] + 3y = 14 Step 3. Solve for y. ex: (8 + 8y)/3 + 3y = 14 --> y = 2 Step 4. Plug that number into the other equation. ex: 3x − 4(2) = 4 Step 5. Solve for x. ex: 3x − 8 = 4 --> x = 4
Subject: Forensic Science
What is the difference between class and individual characteristics?
Class characteristics are meant to provide a general group that the evidence belongs to, in order to rule out. Individual characteristics narrow evidence down to a specific source. An example would be blood evidence. The class characteristic of the blood would be the blood type; an analyst would run a blood typing test on the sample to find the blood type, and rule out any suspect that does not match that type. The individual characteristic would be the DNA of the sample, in order to identify a specific suspect.
Subject: Criminal Justice
What is the difference between the Daubert and Frye standards for admissibility in court?
The Frye standard was established first. In 1923, (Frye vs. United States) the prosecution introduced polygraph-type evidence and the defendant was convicted. Through the appeal process, the Frye standard was created. This standard states that the science trying to be admitted needs to be "generally accepted" within its own scientific community. The Daubert standard was created later due to the vagueness of the Frye standard. IN 1993 (Merrell Dow Pharmaceuticals, Inc.) the case was dismissed due to insufficient admissible evidence. The Daubert standard has since replaced the Frye standard in many states and specifies five criteria: 1. Known error rate, 2. Testable hypothesis, 3. Peer-reviewed, 4. Generally accepted within its scientific community, and 5. Standardized procedure.
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