Planes a and b are shown.

planes b and a intersect. plane b is vertical and contains vertical line n. plane a is horizontal and contains horizontal line m. lines m and n are perpendicular. line l is on plane a and it is slightly diagonal.

if a new line, p, is drawn parallel to line l, which statement is true?

line p must be drawn in plane b.

line p must be perpendicular to line m.

line p must be drawn so that it can lie in the same plane as line l.

line p must be drawn in the same plane as line n.

Astudent conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all. 2. based on the experiment in the scenario, which visual aid would be most in showing the change in the plants' heights over time? a. a pie chart b. a line graph c. a timeline d. a bar graph

Aplane cuts a pyramid as shown in the diagram. what is the shape of the cross section? a. a hexagon b. a pentagon c. a square d. a triangle

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted