Which of the following correctly describes the formula for speed?
speed equals direction plus time
speed equals distance plus direction
speed equals distance over time
speed equals mass over time

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!