Adding the complex numbers 11 + i and -- 5 - 7i is equivalent to the operation (11+-5)+(1+-7) i.

True or False?

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.

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Solve the inequality and graph 6j - 7 < 5