Question

find the sum of...

a) 137 and 263=
b) -256 and 567=
c) 356 and -567=
d) -200 and -400=​

Answer 1

Answer:

Given that

Let us assume that the lowered temperature as negative,

Initial temperature = 40oC

Change in temperature per hour = -5oC

Change in temperature after 10 hours = (-5) × 10 = -50oC

∴The final room temperature after 10 hours of freezing process = 40oC + (-50oC)

= -10oC

The room temperature 10 hours after the process begins= -10oC

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Answer 2

Answer:

u can solve it by doing multiplication