Question

3. a) At midnight, the temperature was0°C. 2 hours later it was 5°C colder. What was the
temperature then?
b) The temperature at 12 Noon was 12°C above zero. If it decreases at the rate of 4°C
Per hour until midnight, at what time would the temperature be 4°C below zero?
c) Verify: i). {(-60) x (-40)} x 12 = (-60X(-40) x 12)
ii). 20 x {(-19)+5)= {20 X (-19) + 20 x 5)​

Answer 1

Answer:

a) -5 degrees

b) 4 PM

Step-by-step explanation:

For a) The temperature is 0 degrees. After 2 hours, the temperature will be 0-5= -5 degrees.

For b) Temperature at 12 noon=0 degrees

Rate of decrement= 4 degrees per hour

Temp. at 1 pm=8 degrees

Temp. at 2pm=4 degrees

Temp. at 3 pm=0 degrees

Temp. at 4 pm= -4 degrees

Answer 2

Answer:

refer the attachment

Step-by-step explanation:

the phenomenal