Which values for A and B will create infinitely many solutions for this system of equations? 4 x minus A y = 15. Negative 4 x + 6 y = B.
A = negative 6, B = 15
A = 6, B = 15
A = 6, B = negative 15
A = negative 6, B = negative 15

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.