Which expression is equivalent to 12x − 8x + 3 and why? (1 point) 3 + 4x, because (12x − 8x) + 3 = 4x + 3 = 3 + 4x 7x, because 12x − 8x + 3 = 4x + 3 = 7x 12x − 5, because 12x − (8x − 3) = 12x − 5 x, because 12x − 8x + 3 = 12x − 11x = x

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.