The average age of 25 girls 10 years if one girl aged 12 years and 4 months join the group correct to one decimal place the new average age of the groups

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

The answer is 49/16 or 3 1/16

Element a has no reactivity because it has eight valence electrons and cannot gain anymore electron and it wouldn't lose any either