Class 10R sat a test the mean mark for the class was 70% there are 30 students in class 10R, 20 are boys the mean mark for the boys is 62% work out the mean for the girls

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585