Conversion formula exactly how to transform 90 minutes to hours?

We understand (by definition) that:1⁢min≈0.016666667⁢hr

We can set up a relationship to deal with for the number of hours.

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1⁢min90⁢min≈0.016666667⁢hrx⁢hr

Now, us cross multiply to resolve for our unknown x:

x⁢hr≈90⁢min1⁢min*0.016666667⁢hr→x⁢hr≈1.50000003⁢hr

Conclusion:90⁢min≈1.50000003⁢hr


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Conversion in the opposite direction

The station of the conversion factor is that 1 hour is equal to 0.666666666666667 times 90 minutes.

It can likewise be to express as: 90 minute is same to 1 0.666666666666667 hours.

Approximation

An almost right numerical result would be: ninety minute is around zero hours, or alternatively, a hour is around zero suggest six 7 times ninety minutes.

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Units involved

This is just how the units in this conversion are defined:

Minutes

"The minute is a unit the time or that angle. As a unit the time, the minute is equal to 1⁄60 (the first sexagesimal fraction) of one hour, or 60 seconds. In the UTC time standard, a minute on rare occasions has actually 61 seconds, a an effect of leap secs (there is a provision come insert a an adverse leap second, which would an outcome in a 59-second minute, but this has never taken place in much more than 40 year under this system). Together a unit of angle, the minute that arc is equal to 1⁄60 that a degree, or 60 seconds (of arc). Although no an SI unit for either time or angle, the minute is accepted for use v SI units for both. The SI icons for minute or minutes space min because that time measurement."

Wikipedia page of minutes

Hours

"Midnight (or noon) on a 12-hour analog clock one hour is a unit of time conventionally reckoned as 1⁄24 that a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions.The seasonal, temporal, or uneven hour was established in the ancient Near east as 1⁄12 that the night or daytime. Such hrs varied by season, latitude, and also weather. It was subsequently split into 60 minutes, each of 60 seconds. That East asian equivalent was the shi, which was 1⁄12 that the evident solar day; a comparable system was eventually emerged in Europe i m sorry measured its equal or equinoctial hour as 1⁄24 of together days measured native noon come noon. The boy variations of this unit were ultimately smoothed through making it 1⁄24 of the typical solar day, based upon the measure up of the suns transit follow me the celestial equator fairly than follow me the ecliptic. This was finally abandoned due to the minor slowing caused by the Earths tidal deceleration by the Moon.In the contemporary metric system, hours are an embraced unit the time equal to 3,600 seconds but an hour the Coordinated universal Time (UTC) might incorporate a confident or an unfavorable leap second, making it critical 3,599 or 3,601 seconds, in stimulate to save it within 0.9 secs of global time, i beg your pardon is based upon measurements the the mean solar day at 0° longitude."

Wikipedia page of hours

Footnotes

<1> The precision is 15 significant digits (fourteen number to the ideal of the decimal point).