Solve the equation. check for extraneous solutions. 2|7-7|=2x+4

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate. in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Hi, can anyone show me how to do this problem? 100 points for this. in advance