Which expression represents the opposite of the coordinate for the point between B and C?

A) -(-30)
B) -(30)
C) -(31)
D) -[-(-31)]

100 points for answering

answer: the value of x is 7cm

step-by-step explanation:

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.