Question

a certain process requirs that room temperture be lowered from 40 at the rate of 5 degree celsius every hour what will be the room temperture 10 hours after the process begins​

Answer 1

Answer:

After 10 hours, it will be -10 degrees

Step-by-step explanation:

Current temperature= 40

Rate of decreasing= -5 every hour

Temperature decreased after 10 hours = -5 x 10

                                                                 = -50

After 10 hours=  40-50= -10

Answer 2

intial temperature = 40°c

Room temperature decreases at 5°c per hour

temperature change in 1 hour = -5°c

temperature change in 10 hours = -5×10°c =-50°c

Room temperature after 10 hours = intial temperature + temperature change in 10 hours

= 40 + (-50)°c

= 40 - 50

= -(-40+50)

= -(50-40)

= -10°c