Answer: x-5y+6
Step-by-step explanation: combine like terms
4x+2x-5x=x
2y-7y=-5y
8-2=6
B is the right answer for this
The value of the length DF is 17
<h3>How to determine the length DF?</h3>
The statement Triangle ABC = Triangle ADF means that the triangles ABC and ADF are congruent triangles.
So, we have:
AB = AD
AC = A F
BC = DF
Given that BC = 17;
The equation BC = DF becomes
17 = DF
Rewrite as:
DF = 17
Hence, the value of the length DF is 17
Read more about congruent triangles at:
brainly.com/question/1675117
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Domain = R
Range = R .............
I^2 = (sqrt-1)^2 then the square cancels out so the answer is just
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