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• an identity thief watches someone enter a four-digit pin and manages to see that the first digit is 3. they also know that the second digit is either 4 or 7. if the thief tries guessing the pin, how many possiblities would there be?
  
• in the 1900s, an arms race occurred when which two countries began to compete over the size of their navies?
  
• what is the area of the shaded portion of the circle? (16π – 32) in2 (16π – 8) in2 (64π – 32) in2 (64π – 8) in2
  
• what is the range of this set of heights in centimeters? {140, 166, 132, 165, 152, 168, 181, 158, 173, 171, 180, 182, 163, 177, 180, 142, 147, 149, 178} 38 41 46 50
  
• which of these atc output devices provides a feedback signal to the electronic control module (ecm)?
  
• which are solutions of the equation x2 – 16 = 0? check all that apply.x = –8x = –4x = –2x = 2x = 4x = 8
  
• matilda has a 100 g rock sample. she knows that the rock contains uranium-238 and that the half-life of uranium-238 is 4.5 x 109 years. if she cuts the rock sample in half, what happens to the half-life of the uranium? the half-life increases. the half-life decreases. the half-life remains the same.
  
• a shipping container will be used to transport several 100-kilogram crates across the country by rail. the greatest weight that can be loaded into the container is 24500 kilograms. other shipments weighing 9100 kilograms have already been loaded into the container. use the drop-down menu below to write an inequality representing cc, the total number of 100-kilogram crates that can be loaded into the shipping container.
  
• in the united states today, what gives money its value? people trust that dollars are valuable. dollars are backed by gold and silver. dollars can be exchanged for a precious commodity. money has a representative value.
  
• in what way is this setting characteristic of gothic fiction? the building contains a variety of shops. the doorway is worn and neglected. the building belongs to a wealthy family. the doorway is frequently visited.