The heights of six students in a class are given below: 158 cm, 172 cm, 164 cm, 164 cm, 167 cm, 159 cm. However, there were actually seven students in the class, and the mean height in the class was 165 cm. What was the height of the unknown student?

Ithink the answer is b

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c

Ive seen this before! the answer is b