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Vilka [71]
4 years ago
7

WILL GIVE BRAINLIEST

Mathematics
1 answer:
Black_prince [1.1K]4 years ago
4 0

Answer:

<em>82.2 (the last option)</em>

Step-by-step explanation:

<u>Weighted Sum</u>

When we get a sequence of values a,b,c... and we want to know the sum of all but with different percent weights pa,pb,pc... where pa+pb+pc...=100%, we compute the weighted sum as

S=a.pa+b.pb+c.pc...

The student got this final grades: tests 86, project 76, reviews 77 and their relative weights are tests 60% (0.6), book review 20% (0.2), project 20% (0.2)

The final grade is

s=86(0.6)+76(0.2)+77(0.2)

S=82.2

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