The phrase "determined with certainty" is grammatically correct and can be used in written English.
Example: The scientists were able to determine, with certainty, the exact location and strength of the earthquake.
The object "cannot be determined with certainty," the Israeli military said in a statement.
The commission said in its annual report published on Tuesday that the reasons for the increase cannot be determined with certainty.
Its origin has not been determined with certainty but the popular belief is that the disease arrived with infected UN soldiers from Nepal.
Further, the ages of the detainees brought to Guantánamo as enemy combatants cannot be determined with certainty, leaving officials to make estimates.
By the time they appear in the fossil record, the Columbiformes are already so well differentiated that their phylogenetic relations cannot be determined with certainty.
The cause of the crash has not yet been determined with certainty, with a full investigation expected to be finished later this month.
Whether they represent mucinous cystadenocarcinomas or mucinous carcinomas that arose from the flat variant of intraductal papillary mucinous neoplasms could not be determined with certainty.
Until a business adventure has been completely liquidated, it can never be determined with certainty whether there have been profits unless the returns at least exceeded the capital originally invested.
These are the "wicked problems" — questions in which success cannot be determined with certainty or where multiple, mutually exclusive goals must be delicately balanced to create an optimal outcome.
But Loretta Pickus, the former general counsel at the casino, told me that it could not be determined with certainty which employee had recorded the footage with a phone.
The purported LTR experiments were difficult to verify because surface temperature profiles were generally non-linear and the Biot numbers for the system under study could not be determined with certainty.
