Tell if each of the subtraction sentences would always, sometimes, or never be true. Support
your answer with two examples.
a. (+) – (+) = (+)
b. (+) - (-) = (-)
c. (-) - (-) = (-)
d. (-) - (+) = (+)

1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.

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

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches