Find lcd & new numerator of 1 4/5 + 1 2/3

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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