1. A quadrilateral PQRS is translated to the left by 4 units to obtain another quadrilateral P Q R S'.
Which statement is correct?

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.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account