Set up an equation and solve for x.
115°
39x – 2

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.

41/17 as a decimal rounded to the nearest hundredth

State one method by which you can recognize a perfect square trinomial.