Hi,
A is an arithmetic sequence
U(n)=U(n-1)+3
C- I’m assuming that you meant to say that they have one angle that is equivalent to another
All isosceles triangles have two sides that are of equal length
I’m not sure if I get the question, but the second one would be a fact and the others are all statements. I hope this helps :)
Answer:
No solution
Step-by-step explanation:

Lets consider the equation 2.
Here we multiply the LHS and RHS with (-1).

Hence,

When we add the equations we get,

As 0 doesn't equal to -1, answer is d) No solution
Answer:
833/500 or 1 333/500
Step-by-step explanation: