10x+7y-2z=46 3x-2y+9z=22 5x+y-3z=28

For each proportion find the unknown number x 1/5/8=×/15

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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