Answer:
Step-by-step explanation:
The formula u have written is incorrect. It should be C = [5 (F-32)]÷9.
To identify which is hotter, you need to bring both the values either in celsius or in Fahrenheit.
Let's convert 85°F to celsius:
C = [5 ( F - 32 )] ÷ 9
C = [5 ( 85-32 )] ÷ 9
C = [5 (53)] ÷ 9
C = 29.4 °C
thus 30°C is hotter than 85°F
Step-by-step explanation:
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Answer:
C) 
Step-by-step explanation:

Group the similar terms together:

Add/subtract the "c" variables:

Add/subtract the "d" variables:

Answer:
3/4
Step-by-step explanation: