The phrase "agree with the theory" is correct and usable in written English.
You can use it when expressing your concurrence or alignment with a specific theory or idea presented in a discussion or academic context.
Example: "After reviewing the evidence, I find that I agree with the theory proposed by the researchers."
Alternatives: "concur with the theory" or "support the theory."
This is why I don't agree with the theory of a scapegoat.
So does he agree with the theory that many young people are apathetic about finding work?
The magnetic moment of this type of particle has been shown to agree with the theory to nine significant digits.
If the measurement does not agree with the theory, this might be because new particles, not present in the Standard Model, are going round those loops.
They won't all be done yet, but any that are shown will either agree with the theory, meaning we've successfully understood nature in a new regime, or will disagree.
It is therefore a relief that Dr Vikhlinin's results agree with the theory: the pushing apart of space that dark energy causes makes it harder than it otherwise would be for galactic clusters to grow.This result does not bring physicists much closer to understanding what dark energy actually is.
Nevertheless, the simulation results regarding the kinetics of the MFC seemed to agree with the theories and provided better understanding of the process.
Similarly if PR are resurfacing it would agree with the theories that there is an overall reduction in inhibition associated with reduced grey matter and CLBP [ 26, 61].
Akio Saito, a Fukui resident, agreed with the theory that the victims were fellow fishermen, sent out in dilapidated vessels ill-equipped to cover long distances.
He agreed with the theory that if the Yankees and the Mets were to play a World Series, the Mets would have more to gain than the Yankees, from the perception of fans.
Corriere della Sera agreed with the theory that Italy's current match fixing scandal, which saw one player leave the squad just before the tournament, had brought the best out of the team.
