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genyjoannerubiera
22.07.2021 •
Mathematics
Chứng minh span(v1,v2,v3)= span (v1,v2,av3)
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Ответ:
The fifth grade is 86
Step-by-step explanation:
Given that there are five grades, let the missing fifth grade be represented by x:
84 +79 +82 +88 + x /5 = 83.8
333 + x/5 = 83.8
Next, we cross multiply:
333 + x = 83.8 x 5
333 + x = 419
Subtract 333 from both sides of the equation to get the value of x
333 + x - 333 = 419 - 333
x = 86