Aiden picked 27 cucumbers from his garden.
He kept 3 for himself.
Then, he shared the remaining cucumbers equally among 4 friends.
The part-part-whole model shown represents this situation.
Use the drop-down menus to complete the statements below.

Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?