'inaccurately-determined' originates from the combination of 'inaccurate' and 'determine'. 'Inaccurate' comes from Latin 'inaccuratus', where 'in-' meant 'not' and 'accuratus' meant 'done with care'. 'Determine' comes from Latin 'determinare', where 'de-' meant 'off' and 'terminare' meant 'to limit'.

'Inaccurate' transformed from the Latin 'inaccuratus' to the Middle English 'inaccurate', and 'determine' evolved from the Latin 'determinare' to the Middle English 'determinen'.

Initially, 'inaccurate' meant 'not done with care', and 'determine' meant 'to limit'. Over time, 'inaccurately-determined' evolved to mean 'calculated with errors'.