Cho tập A = { 1, 2, 3, 4, 5, 6, 7, 8, 9}. Sử dụng phương pháp sinh hoán vị theo thứ tự từ điển, tìm 4 hoán vị liền kề tiếp theo của hoán vị 458796321.

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

What is the distance between point a and b