Homework Help: math

Posted by Jamie (a girl) on Thursday, December 8, 2011 at 9:33pm.

If i have a test average of 74% and i need to make an average of at least 83% what would the lowest grade i could make be on the final test? (tests are worth 20%)

math - drwls, Thursday, December 8, 2011 at 9:38pm
Which tests are worth 20%?

If previous tests count 20% and the final test counts 80%,
0.2*0.74 + 0.8*X = 0.83
0.8X = 0.682
X = 85.3%
math - Jasmine, Friday, December 9, 2011 at 10:43am
Explain and show how you would estimate 0.5 x 4.62. Then justify why this is a good choice for arriving at the correct answer.
math - Jamie (a girl), Sunday, December 11, 2011 at 11:31pm
all tests are worth 20 percent

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