Answer:
x=2;DE,EF=9,DF=5
Step-by-step explanation:
Since DEF is isoceles, you can set the equations
x+7 and 2x+5 equal to each other
x+7=2x+5, now solve for x
-x=-2,
x=2, now plug in for each side
DE,EF=9
DF=3(2)-1=5
Here's link to the answer:
tinyurl.com/wpazsebu
Domain: (-∞,∞), Range: [2,∞)
17
49-32=17
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Hope this helps!