in the midnight temperature in Johannesburg is -5°c and in Durban it is 13°c. how much higher is Durban temperature?​

18°c

Explanation:

Midnight temperature in Johannesburg = -5°c

Midnight temperature in Durban = 13°c

Now we want to find how much higher the temperature in Durban is above the temperature in Johannesburg. We do this by finding the difference between the temperature in Durban and the temperature in Johannesburg .

So,

Difference between the temperature in Durban and the temperature in Johannesburg = 13 - (-5) = 18°c

a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m