Which situation models combining a number and its additive inverse to make 0? a. after spending $20.00, marjorie has $20.00 left in her wallet. b. the temperature at midnight was –8°f. the temperature decreased 8°f by morning. c. tim has $25.00 in his bank account. he withdraws $25.00 from his bank account and gives it to his mother. d. an airplane is at an altitude of 50,000 feet. an hour later, the airplane is still at an altitude of 50,000 feet.

THat would be C

25,00 + (-25.00) = 0

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: