1. State the appropriate z-critical values for a 90% confidence interval for the estimate of a mean, where the population standard deviation (sima) is known O +2.576
1645
+2326
11.960
+1.282

Which expression is equivalent to sq-80

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

Which graph represents the function g(x) = |x + 4| + 2?