At midnight the temperature in a city was 5 degrees celsius. the temperature was dropping at a steady rate of 2 degrees celsius per hour. write an inequality that represents t the hours past midnight when the temperature was colder then -4 degrees celsius.

( 5 - 2t ) < - 4

Step-by-step explanation:

The midnight temperature is 5 °C and the temperature is decreasing at the rate of 2°C per hour.

If t is the hours past midnight then after t hours the temperature will be ( 5 - 2t ).

Now, if this temperature is colder than - 4° C, then the inequality can be written as   ( 5 - 2t ) < - 4 (Answer)

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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