What is the x-coordinate for the minimum point in the function f(x) = 4 cos(2x â ï) from x = 0 to x = 2ï?

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.