Given that AA'B'C'is the image of AABC, after a dilation centered at the origin, which of the following is not a valid method to determine the scale
factor of the dilation?
Divide the area of AA'B'C' by the area of AABC
Divide the perimeter of AA'B'C' by the perimeter of AABO
Divide the x coordinate of Al by the x coordinate of A.
Divide the y coordinate of C' by the y coordinate of c.

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

What is the value of x when x + 7 = 21?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?