More Algebra Help! thanks?

  • Thread starter Thread starter Ruba A
  • Start date Start date
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Ruba A

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ok first i just wanted to ask if this statement true......if its not true can u give a counterexample
ok its:
If a²=b², then a=b


Ok i also needed help with this word problem.....ino the answer i just dnt no how to show my work

If peter recieved grades of 88,83,75, and 80 on four tests in English, what is the minimum grade he has to score on the fifth test to have an average of at least 85 for the course?

show wrk pleeze...........thanx in advance (:
 
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