Which property is used in the first step to solve this equation? 4(x-6)=5 4x-24=5 4x=29 x=29/4 addition property of equality distributive property division property of equality commutative property

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?

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Me i’m stuck on all these questions besides the two bottom ones