George's page contains twice as many typed words as bill's page and bill's page contains 50 fewer words than charlie's page. if each person can type 60 words per minute, after one minute, the difference ate ice the number of words on bill's page and the number of words on charlie's page is 210. how many words did bill's page contain initially?

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth