280 miles in 4 hours 816 miles in 12 hours how are the ratios set up

Pls brainliest will be awarded if answer is correct

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.