Answers created by Chiara G.

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• A washer and a dryer cost $687 combined. The washer costs $37 more than the dryer. What is the cost of the dryer?
  
• If a DNA strand has the nucleotide sequence of CCGAGATTG, what is the nucleotide sequence of the complementary strand?
  
• How do you simplify #21 - 1 times 2 ÷ 4# using order of operations?
  
• How do scientists isolate DNA in order to study it?
  
• How do you balance #NH_3 + H_2SO_4 -> (NH_4)_2SO_4#?
  
• How do you write 7.4 nm in scientific notation?
  
• Why is H2O a polar bond?
  
• What connects the mouth to the stomach?
  
• What is the distance between Jupiter and our moon?
  
• Mercury is closest to the sun, yet Venus has a higher surface temperature. Why?
  
• In the complete reaction of 22.99 g of sodium with 35,45 g of chloride, what mass of sodium chloride is formed?
  
• How do you simplify #(x^2+x+15)/(x^2-3x)#?
  
• How do quasars differ from stars?
  
• How do temperatures on the moon differ from those on Earth?
  
• Why is the Big Bang Theory a theory and not a law?
  
• What is the distance to the farthest known quasar from earth?
  
• What is the distance between #(-3,7)# and #(5,-1)#?
  
• What is the standard form of #y= (-6x-5)(2x-3) #?