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olganol [36]
3 years ago
14

Christian has six grades from test and IXL. They are all weighted equally. If Christian's grades are 100,96,96,88,70, and 100, w

hat is thhe current average grade? (Round to the nearest whole number)
Mathematics
1 answer:
lina2011 [118]3 years ago
5 0

Answer:

100+96+96+88+70+100=550

550 divided by 6 is 91 1/3

92 is his current grade

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\begin{gathered} AC^2=AB^2+CB^2-2\cdot AB\cdot CB\cdot cos\left(\angle ABC\right) \\ AC^2=145^2+240^2-2\cdot145\cdot240\cdot cos(68\degree) \\ AC^2=21025+57600-69600\cdot cos(68\operatorname{\degree}) \\ AC^2=52552.3811 \\ AC=\sqrt{52552.3811} \\ AC\approx229\text{ m} \end{gathered}

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