Question

The temperature of a certain place was 10°C above zero. If it decreases at the rate of
25°C per hour for 12 hours continuously, after how long would the temperature be -8°C?​

Answer 1

Answer:

this is question of AP

here,

a=10

d-25

n=?

An=-8

thus

An=a+(n-1)*d

-8 =10+(n-1)*-25

-8 =10-25n+25

-8=35-25n

25n=43

n=43/25

n=1.7 hrs

Answer 2

Answer:

I can't understand your questions