What is 1+1, i need help, i have been struggling for weeks to get this answer, please help.

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

What situation is an example of an observational study

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?