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• how do the muscles help in thermoregulation? muscles produce oil that burns in the presence of oxygen. muscles undergo a chemical reaction that absorbs heat. muscles break down carbon dioxide, producing heat. muscles contract rapidly, producing heat.
  
• checking account transactions are not reported to the credit bureaus and do not affect your credit score. why is it still important to manage your checking account well?
  
• a follow-up study will be conducted with a sample of 20 people from the 300 people who responded yes (support) and no (do not support). two sampling methods have been proposed: a simple random sample and a stratified random sample with the survey response as strata. (b) if the stratified random sample is used, what is the number of people that will be selected from those who responded yes? support your answer by showing your work.
  
• calculate the social security and medicare tax that would be applied to an annual salary of $35,400. a. social security tax: $2,194.80, medicare tax: $513.30 b. social security tax: $21,948.00, medicare tax: $5,133.00 c. social security tax: $6,621.60, medicare tax: $513.30 d. social security tax: $66,216.00, medicare tax: $5,133.00 please select the best answer from the choices provided a b c d
  
• water is made of two hydrogen atoms and one oxygen atom bonded together. julia is describing how water undergoes a physical change when it boils. she says that the particles shift to be farther apart and that the oxygen and hydrogen separate. she also says that the total mass of the steam is the same as the initial water, and that heat energy was required to cause the change. she finishes her description by saying that the steam can be turned back into water if it is cooled. which is the mistake in her description? the total mass remains the same in physical changes. the arrangement of particles may change in physical changes. atoms remain bonded to each other in physical changes. energy changes may occur in physical changes.
  
• lou’s shoes is having its annual flag day sale and is offering a 25% discount on all regularly priced shoes. kayla spends $13.50 buying sandals and sneakers. determine which equation represents how much kayla will spend on sandals after the discount.
  
• which statements describe the graph of y = negative rootindex 3 startroot x minus 1 endroot + 2? select three options. the graph has a domain of all real numbers. the graph has a range of y greater-than-or-equal-to 1. as x is increasing, y is decreasing. the graph has a y-intercept at (0, 1). the graph has an x-intercept at (–7, 0).
  
• ximena is going to invest in an account paying an interest rate of 2.2% compounded continuously. how much would ximena need to invest, to the nearest ten dollars, for the value of the account to reach $5,100 in 6 years?
  
• should a president die in office, which official succeeds the president if the vice president is unable to assume the role?
  
• a line that passes through the points (–4, 10) and (–1, 5) can be represented by the equation y = y equals negative startfraction 5 over 3 endfraction left-parenthesis x minus 2 right parenthesis.(x – 2). which equations also represent this line? select three options.