11. tell whether the sequence is arithmetic. if it is, what is the common difference?
19, 12.5, -2
no
yes: 1/7
yes; 7
yes; -7

No.

Step-by-step explanation:

19 - 12.5 = 6.5

12.5 - (-2) = 14.5

The differences between two pairs of consecutive numbers of the sequence are not equal, so there is no common difference, and the sequence is not arithmetic.

Step-by-step explanation:

The given sequence is

The given sequence is not arithmetic, because there's no difference pattern. For example, the difference between 12.5 and 19 is -6.5, and the difference between 12.5 and -2 is 14.5, therefore it's not an arithmetic sequence, because they difference is not the same for all terms.

Therefore, the answer is the first choice NO.

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

cool stunts are flippin i think

sitting on a chair

and using stick feet