Which of the following equations has only one solution?

Mathematics

2 answers:

Daniel [21]3 years ago

4 0

X^2-6x+9=0 has only one solution
Hope this helps

Ksenya-84 [330]3 years ago

4 0

The third one only has one solution and the first one has two which is 3,-3
the second one has two
So the answer is C

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Step-by-step explanation:

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mihalych1998 [28]

Answer:

C. $x=20^{\circ}$

Step-by-step explanation:

Angle 6 and angle with measure 45° are vertical angles (opposite angles whan two lines intersect). By Vertical Angles Theorem, vertical angles are congruent, so

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