Answers edited by Untitled

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• How do you write 0.00608 in scientific notation?
  
• How do you solve by the substitution method to find the ordered pair 2x + 5y = -11 and x = -4 - 4y?
  
• A piece of ice (heat capacity #= 2100J kg^(-1 @)C ^-1# and latent heat #= 3.36 xx 10^5 J kg^-1#) of mass #m# gram is at #-5^@C# at atmospheric pressure. It isgiven #420 J# of heat so that the ice starts melting. Finally when the ..........?