Find the error in the generating expression. 4+2x+-1/2(10+-4x)
4+2x+-5+2x
4+2x-5+2x
-1

An angle that measures between 90 and 180° is called a(,

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?

In the diagram below,abc is congruent to dec what is the value of x