Answer:
f(x) - g(x) = (1/x) + 2 - 3x or (f - g)(x)
Step-by-step explanation:
f(x) = 1/x+2
-g(x) = 3x
can be summarized on line line as:
f(x) - g(x) = (1/x) + 2 - 3x or (f - g)(x)
You lost 8 points the highest score would have been 80
Answer:
37:31 or any other way of writing 37 to 31
Step-by-step explanation:
Write the ratio the same way the question asks, there are 37 girls and 31 boys. This cannot be simplified.
If I understood your problem, you want to calculate the sum of the squared deviations from the sample. If so the formula of the St. Deviation is:
₋
s =√[Σ(xi - x)²/(n-1)], with n = sample size
₋
s² =Σ(xi - x)²/(n-1)
4² = Σ(xi - x)²/(20-1) = Σ(xi - x)²/(20-1)
16 = Σ(xi - x)²/(19)
and Σ(xi - x)² = (16).(19) = 304