Please answer the questions with full explanation............
Answers
Hi Buddy
Step-by-step explanation:
1)
current temp. = 7° C
rate of decreasing = 2°C/h
current time = 6pm
temp. to find out of time = 9pm
difference = 3 hrs
temp. decreased in hrs = 3 * 2° C
= 6°
temp at 9pm = 1° C
2)
rate = 2° / h
I. e. it will take 1 more hour from 9 pm to -1° C
I. e. time will be = 10pm
3)
temp at midnight = temp. at 10pm - 2*(difference between 12am and 10 pm)
= -1 - 2*4°C
= -9°C
Hope it'll help you and don't for get to mark as Brainliest
Given : Temperature at 6 PM and rate of decreasing temperature per hour
To find : Temperature at given time or time of given temperature
Solution:
Temperature at 6 PM = 7°C
Rate of decreasing temperature = 2° per hr
Temperature at 9PM
time it has been = 9 - 6 = 3hr
Temperature at 9 PM = 7 - 2 * 3
= 1°C
temperature - 1°C
=> -1 = 7 - 2*T
=> T = 4 hrs
=> time = 6PM + 4 = 10PM
at Midnight 12 PM , time = 12 - 6 = 6 hrs
=> Temperature at Midnight = 7 - 2*6
= -5°C
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