Use the quadratic formula to find the exact roots of –5x^2 + 8x – 3 = 0. Express your answers as exact roots. Show all steps.
2 answers:
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Answer:
84.9
Step-by-step explanation:
The weighted mean is given by the sum of the products of each grade by its respective weight. If the first four grades correspond to 15% of the final grade each, and the final exam is equivalent to 40% of the final grade, Michael's final grade is:
Michael's final weighted mean is 84.9.