Answered

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Mrs. Often's new grading scheme is as follows:Tess. 25%Project: 15%Quiz: 35%Homework: 25% If you have a test average of 75, a quiz average of 50, a homework average of 80, and earn a grade of 70 on the project, what is your grade for the course? Using the same grading scheme shown above, and soll having a test average of 75. quiz average of 50. homework average of 80. what grade must you get on the project to earn an 80 for the course? Is this possible?

Sagot :

[tex]\begin{gathered} 1)75\cdot0.25+50\cdot0.35+80\cdot0.25+70\cdot0.15=66.75 \\ 2)75\cdot025+50\cdot0.35+80\cdot025+x\cdot0.15=80\rightarrow \\ 56.25+x\cdot0.15=80\rightarrow0.15\cdot x=80-56.25=23.75\rightarrow \\ x=\frac{23.75}{0.15}=158.33333 \\ So\text{ it is imposible to get a grade of 80 or better in this course } \end{gathered}[/tex]

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