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• medical technologists are developing a new type of pacemaker that, when planted inside a human’s chest, uses electrical impulses to help keep a steady heartbeat. the new design will send warning signals to a patient’s hospital sooner when it detects an upcoming heart problem. in testing so far, this new feature has only worked in about 25% of test patients. how does this product most likely need to be improved before doctors can report that the new technological design is successful? the product needs to better solve the problem for which it was designed. the product needs to become available to the public more quickly. the product needs to become more time effective when it is being built. the product needs to make better use of available building materials.
  
• most missionaries to the indian territory came to teach __________ to the five tribes.
  
• which of the following statements concerning the influence of culture on ethnic identity formation is accurate? one will reject ethnic identity if cultural stereotypes are encountered. if one’s ethnicity is different from the dominant cultural group, then one’s ethnic identity will become weakened. if an ethnic group is accepted by dominant culture, then ethnic identity formation can be a difficult process. similarity to the dominant culture can determine how easy it is for one to accept ethnic differences.
  
• consider the reaction below. 2h2 + o2 right arrow. 2h2o how many moles of water are produced from 13.35 mol of oxygen? 6.675 mol 26.70 mol 53.40 mol 66.75 mol
  
• how did the magnetic compass help traders? it helped them find their way to new countries by land and water. it helped them protect themselves while traveling on the silk road. it helped them increase their wealth because the compass was in high demand. it helped them locate food along the silk road during the long journey.
  
• choose the statements that are true based on the diagram. ∠a is supplementary to the exterior angle. ∠a and the 80° angle are remote interior angles. 80° + m∠b + 150° = 360°. ∠b measures 70°. ∠a measures 40°.
  
• max rides his scooter toward kim and then passes her at a constant speed. his distance in feet, d, from kim t seconds after he started riding his scooter is given by d = |150 – 9t|. what does the 150 in the equation represent? what does the 9 in the equation represent?
  
• antigens are foreign proteins that invade the systems of organisms. vaccines function by stimulating an organism’s immune system to develop antibodies against a particular antigen. developing a vaccine involves producing an antigen that can be introduced into the organism being vaccinated and which will trigger an immune response without causing the disease associated with the antigen. certain strains of bacteria can be used to produce antigens used in vaccines.
  
• triangle abc is defined by the points a(3,8), b(7,5), and c(2,3). create an equation for a line passing through point a and perpendicular to bc.
  
• what is one reason that societal attitudes toward bullying are changing, according to “the bystander effect”?