three research departments have 10, 7 ,6 and members, respectively. if each department is to select a delegate and an alternate to represent the department at a conference, in how many ways can this be done?

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Tell whether the two rates form a proportion