____ 7. Quadrilateral LIFE is a rectangle. Find the value of x when diagonal LF = 7x – 10 and diagonal IE = 3x + 22. A. 5 B. 6
C. 7 D. 8
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____ 7. Quadrilateral LIFE is a rectangle. Find the value of x when diagonal LF = 7x – 10 and diagonal IE = 3x + 22. A. 5 B. 6
C. 7 D. 8
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Answer:
D. 8
solution:
[tex]LF=IE\\7x-10=3x+22\\7x-3x=22+10\\\frac{4x}{4} =\frac{32}{4} \\x= 8[/tex]