To conduct a survey about the type of phone service most people in greenville prefer ,10 different blocks in the neighborhood are chosen . on these 10blocks ,10houses are selected at random , and then one resident of each of those houses is interviewed. this type of sampling method is

The sampling method is stratified sampling.

Step-by-step explanation:

Stratified sampling is a method where the population is divided into groups and then from within each group a probable sample is selected.

Here, the groups the blocks. Then from each block, 10 houses are randomly selected and 1 person interviewed(probability sample).

Therefore, it is a stratified sampling.

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: