the answer is 23...........
Answer:
The answer is 30 I just did this
Step-by-step explanation:
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One solution- if the graphs of the equations intersect, then there is one solution that is true for both solutions.
No solutions- If the graphs of the equation do not intersect (example-if they are parallel) there are no solutions that there are true for both equations.
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Answer: DA:FA=KE:EF, DF:DA=KF:KE and FA:DA=EF:KE are correct.
Explanation: Since, 
and 
are similar triangles.
Because, 
and 
(because EA and KD are parallels. And, 
is common angle for these triangles.
Therefore, according to the property of similar triangles.
FE:EK= FA:AD, FE:FK=FA:FD and DF:DA=KF:KE .
Thus, first, second and third options are correct.
