10 points! which algebraic expression represents the phrase below? the quotient of the opposite of a number squared and three *choices below*

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

20 points for the brainliest? drag each tile to the correct box. not all tiles will be used. arrange the steps to solve the equation . plz

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'