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• what is the common difference between successive terms in the sequence? 9, 2.5, –4, –10.5, –17, ... –11.5 –6.5 6.5 11.5
  
• which two cities are about the same size? paris and london london and rome constantinople and rome constantinople and tenochtitlán
  
• parallelogram a b c d is shown. diagonals are drawn from point a to point c and from point d to point b and intersect at point e. which concept can be used to prove that the diagonals of a parallelogram bisect each other? congruent triangles similar triangles congruent rectangles similar rectangles
  
• what happened when the stock market crashed in october of 1929? most banks panicked and bought more stocks. most investors panicked and sold all their stocks. most investors calmly put their money into banks. most banks calmly invested to help the stock market.
  
• airplanes reach cruising altitudes at the lower part of the earth's stratosphere. this portion of the atmosphere is made up mostly of and
  
• describe two of africa's most abundant mineral resources. what might prohibit africans from benefiting economically from these natural resource?
  
• a swim club bought a box of c swim caps to split evenly among its 20 members. write an expression that shows how many swim caps each swimmer will get.
  
• giselle graphs the function f(x) = x2. robin graphs the function g(x) = –x2. how does robin’s graph relate to giselle’s?
  
• which statement, if a man exercises 45 minutes each day, according to physical activity recommendations, is true?
  
• has the one-child policy been effective in reaching its goal? no. china is the most populous country in the world. yes. the population of china is decreasing. no. the policy has left china with more men than women. yes. the birth rate and fertility rate have dropped.