The temperature at 6 pm is 86 degrees fahrenheit. and drops 1 1/4 degees every half hour. what is the temperature at 4am.

Temperature at 4 am is 66 degrees.

Step-by-step explanation:

First we have to count how many half an hour's are there from 6 pm to 4 am.

Number of hours from 6 pm to 4 am.  =   hours

Number of half an hours from 6 pm to 4 am.  =

                                                                           =

It is given that temperature drops degrees every half an hour.

Therefore,

Temperature drop in 20 half an hours = degrees

                                                                = degrees

                                                                = degrees

Temperature drops 20 degrees from initial 86 degrees.

Therefore, temperature at 4 am = 86 degrees - 20 degrees

                                                      = 66 degrees

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step-by-step explanation: