18.3+x+(-20.5) +(-8) when x = 30.7.
Plzz helppp

What is the common difference for this arithmetic sequence? -6,-2,2,6,10 a.4 b.5 c.3 d.6

A0.40 kg soccer ball is kicked so that its incoming velocity of 5 m/s is changed to an outgoing velocity of -25 m/s. what impulse does the player apply to the ball?

Which angle of rotation is an angle of rotational symmetry for all figures?