anonymous
  • anonymous
A test consists of multiple choice questions worth 4 points and essay questions worth 8 points. The test has 22 questions that are worth a total of 100 points. Use a model to determine how many multiple choice questions are on the test.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
The answer choices are: 14 16 19 22
anonymous
  • anonymous
What I got was x = 10 and y = 12. But I guess thats wrong.
dumbcow
  • dumbcow
m+e = 22 4m + 8e = 100 use substitution e=22-m ->4m + 8(22-m) = 100 -4m = -76 m = 19

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anonymous
  • anonymous
simultaneous eqns , all it is
anonymous
  • anonymous
so this is wrong? m + e = 22 4m + 8e = 100 m = 10, e = 12
anonymous
  • anonymous
obviously its wrong
anonymous
  • anonymous
:/
anonymous
  • anonymous
sub them in, doesnt satisfy second eqn
anonymous
  • anonymous
ah! I mean. m = 15, e = 5. I don't know where I got 10 and 12 from. ._.
anonymous
  • anonymous
nvm doesn't work for first equation. JEEZ.
anonymous
  • anonymous
Thanks for the help. I really do appreciate it. ;D

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