Ramiya is using the quadratic formula to solve a quadratic equation. her equation is x = after substituting the values of a, b, and c into the formula. which is ramiya’s quadratic equation? quadratic formula: x = 0 = x2 + 3x + 2 0 = x2 – 3x + 2 0 = 2x2 + 3x + 1 0 = 2x2 – 3x + 1

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

What is x3+3x2−16x−48 divided by x−1?

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.