What is the value of the discriminant for the quadratic equation 0 = x + 2 + x2? discriminant = b2 – 4ac

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.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.