Question

(h) (-37) X (-19) + 57
A certain freezing process requires that room temperature be lowered from 40°C at
the rate of 5°C every hour. What will be the room temperature 10 hours after the
process begins?
In a class test containing 10 questions 5 more on​

Answer 1

Answer:

(i) (-37)x(-19)+57=760

(ii)every hour the room temperature decreases to 40/5=8°C

then, in 10 hours temperature will be=  -72°C.

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Answer 2

Step-by-step explanation:

(h) 703 + 57

= 760. answer .

Initial temperature = 40° c

Room temperature decrease at = 5°c

so, Temperature change in 1 hours = - 5°c

Temperature change in 10 hours = ( -5 × 10)°c

= - 50°c .

So, Room temperature after 10 hours = 40 + ( -50)

= 40 - 50

= - 10° c .

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