Evaluate u+w when u = 8,v= -2 and w = 4

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5