Question

or a particular day, the temperature of a place at 12 noon was 19 C above 0 but at mid-night it was 2C below 0°С. Find the change in temperature​

Answer 1

c. is the correct answer

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

We solve this problem by considering the arithmetic progression having the first term as

100C

and the common difference as

−20C

because the temperature is decreasing. The general representation of arithmetic progression is given as

a,a+d,a+2d,...

Here, the formula of

nth

is given as

Tn=a+(n−1)d

By using this formula we calculate the required result.