Question

A mercury thermometer records a temperature of 8 degrees fahrenheit at 10am.if the temperature drops by 3 degrees fahrenheit every hour, what will be the temperature by 2pm. of the same day

Answer 1

Answer:

The temperature by 2 pm of the same day : -4°F

Further explanation  

An arithmetic sequence is an arrangement of numbers that has the same difference for consecutive pairs of numbers or it can be said that "the difference between one term and the next is a constant. (adding the same number to the next number) "  

The arrangement of the numbers is like this:  

a, a+d, a+2d, etc

a = initial term  

d = different (common difference)  

The formula for the nth term:  

xn= a+d(n-1)

a=8°F

n=5(from 10 am to 2 pm, every hour)

d=-3°(temperature drops)

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