"to acknowledge whether" is correct and usable in written English.
You can use it to introduce a clause or phrase that follows a statement or question. For example: "We decided to wait for the results of the election, to acknowledge whether our candidate had won or not."
"It's like a soap opera," said O'Neal, who refused to acknowledge whether Bryant attended the gathering at his home.
The phone companies have said almost nothing publicly about the lawsuits, refusing even to acknowledge whether they had assisted in the wiretapping program.
Ferguson was so incensed by the charge he did not even submit a reply before Monday's deadline to acknowledge whether he pleaded guilty or wanted to fight the case.
An example of an established hypertrophic non-union (Fig. 1) was also provided, and the assessors were permitted to acknowledge whether they felt this was present but it did not count as the 'Callus Fracture' sign being present.
On Sunday, Rios Garza declined to acknowledge whether security cameras were operating in the area around the apartment building in Mexico City's Narvarte district.
First, as noted above, the CIA has refused even to acknowledge "whether the CIA has an intelligence interest in drone strikes".
But perhaps we should be able to acknowledge it, whether that means more toilet breaks for female tennis players or more attention paid to monthly cycles.
The relevant question, as the Court seems to acknowledge, is whether, notwithstanding the passage of Title VII and similar state legislation, the States continued to engage in widespread discrimination on the basis of gender in the provision of family leave benefits.
Wilson even asks in his catalogue essay, as if to acknowledge the fact, whether weak works say more than strong ones.
But it still seemed the polite thing to do to acknowledge most emails, whether they were friendly or not, and I tried to do that, although on occasions it took up quite a bit of time.
He had a moment to decide whether to acknowledge her.
