HELOHELP i think i already what the answer is I just need to make sure which of the following statements are true?

1) all complementary angles have a sum of 180°

2) supplementary angles are two acute angles

3) complementary angles are never congruent

4) two right angles are always supplementary​

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).