Find out the meaning of the word terrestrial and discuss in relation to the planets in the group ​

Which of the following questions is a statistical question? (2 points) how many professional sport leagues are there? where do the professional sport leagues play? how many hours of professional training took place over the weekend? how many hours do you spend each week training for a sports league?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?