Solve the inequality -12

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

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9