Question

(1) Add the following temperatures:
(i) -21°C and 21°C
(iii) -17°C and -21°C
(ii) 30°C and -29°C​

Answer 1

Answer:

Step-by-step explanation:

(i) -21°C +21°C

-21+21=0°C

(ii) -17°C + -21°C

-17+(-21)

-17-21= -38°C

(iii) 30°C + -29°C

30-29=1°C

Hope it helps you...

Answer 2

Answer:

Step-by-step explanation:

-21child