A equação quadrática é escrita na forma a. X² + b. X + c = 0. Na equação quadrática seguinte 9.X² - 2.X + 6 = 0 , a soma dos valores dos coeficientes (a + b + c) vale:

Select the correct answer from each drop-down menu. james needs to clock a minimum of 9 hours per day at work. the data set records his daily work hours, which vary between 9 hours and 12 hours, for a certain number of days. {9, 9.5, 10, 10.5, 10.5, 11, 11, 11.5, 11.5, 11.5, 12, 12}. the median number of hours james worked is . the skew of the distribution is