redhead7
redhead7 redhead7
  • 13-07-2017
  • Mathematics
contestada

HELP ME !!! PLEASE ! I NEED HELP WITH THESE 2 PROBLEMS !!!! 20 POINTS!!!

HELP ME PLEASE I NEED HELP WITH THESE 2 PROBLEMS 20 POINTS class=

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apologiabiology
apologiabiology apologiabiology
  • 13-07-2017
in the first problem, the student is trying to find the solution of the two equations
so the student should use both equations
what the student did was only use the 2nd equation twice (if you use the same equation there are infinite solutions) when he/she should have used both equations

for the 2nd problem
trashaway=0.25x+25 where x=number of pounds
garbagenomore=45
solve where they intersect or where they are equal
45=0.25x+25
20=0.25x
80=x
80lb
Answer Link

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