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ARTS :true. or. false. What makes radioisotopes useful for dating objects?O A. They have unique emission spectra.O B. They decay at a predictable rate.C. Their decay products are easy to detect.O D. They all have extremely long half-lives. 4 x 3 x + 2 y (simplify) A number of households in Florida were selected to participate in a trash recycling program. Residents were encouraged to separate newspaper and aluminum products for collection. It was found that a brochure that informed residents about the nature of the program increased the number of people who participated in the program by separating their trash that could be recycled.Determine if this is an example of positive reinforcement, negative reinforcement, positive punishment, negative punishment, classical conditioning, or none of the above.A. Negative reinforcementB. Classical conditioningC. Positive reinforcementD. Negative punishmentE. Positive punishmentF. None of these Colombia est dividida en entidades territoriales de diferentes niveles. estas entidades son de niveles superiores e inferiores. Gracias al sistema jurdico y legal, la Constitucin, posibilita la creacin de las reas metropolitanas, comunas y corregimientos, y prestan servicios a la poblacin. A cul grupo de entidades superiores e inferiores hace referencia el escrito? A. Municipios y territorios indgenas.B.Departamentos, distritos, municipios y territorios indgenas.C.Departamentos y territorios indgenas.D.Departamentos, distritos y territorios indgenas.E.Distritos y municipios y territorios departamentales.. Help with this Geometry question please Help me with this this is something i dont know and its not on here please help meeeeeee assssssssssssssssssssssssssssssssss hey again can u help me with this Find the value of X Margot surveyed a random sample of 180 people from the United States about their favorite sports to watch. Then she sent separate, similar, survey to a random sample of 180 people from the United Kingdom. Here are the results:Favorite sport to watch United States United kingdom TotalBasketball 60 51 111Football 67 14 81Soccer 28 86 114Tennis 25 29 54 Total 180 180 360Margot wants to perform a x^2 test of homogeneity on these results. What is the expected count for the cell corresponding to people from the United Kingdom whose favorite sports to watch is tennis? WILL MARK BRAINLIEST!!!!!find the length of AC Simplify:{x(6x - 1A)B)2x-192xx-2x7.5D Why were more African American dying in the war ill give you what eva you like In CDE, DE=14, CE=9, and mE=71. What is the length of CD? Enter your answer, rounded to the nearest hundredth, in the box. I need big help on this one Can someone help me? It's urgent and thank you! Choose the answer that most nearly has the same meaning as the underlinedword.A benefactor is?.a mathematiciana supportera makeup artista researcher Can someone help me with this, please?Name the 10 Native American cultural groups found in North America. Why did each Native American cultural group develop a distinct culture? Choose any two of these groups and provide a brief description of their cultures. Be certain to include an example or explanation telling how and why the cultures developed as they did.