Temperatures on the Celsius and Fahrenheit scales are related by the function C = 5 (F - 32) / 9, where C is the temperature in degrees Celsius and F is the temperature in Fahrenheit. What temperature on the Celsius scale is equivalent to 77 degrees Fahrenheit?

A

15 degrees Celsius

B

20 degrees Celsius

C

25 degrees Celsius

D

30 degrees Celsius

Question

Mathematics

Sasha Weaver

11 September, 12:30

Temperatures on the Celsius and Fahrenheit scales are related by the function C = 5 (F - 32) / 9, where C is the temperature in degrees Celsius and F is the temperature in Fahrenheit. What temperature on the Celsius scale is equivalent to 77 degrees Fahrenheit?

A

15 degrees Celsius

B

20 degrees Celsius

C

25 degrees Celsius

D

30 degrees Celsius

+5

Answers (2)

Know the Answer?

Jimena Ibarra · Answer 1

Answer: C = 5. (77 - 32) / 9

C = 5.45/9

C = 225/9

C = 25 graus.

Peter Little · Answer 2

Option C) 25 degrees Celsius

Step-by-step explanation:

C = 5 (F - 32) / 9

To find the equivalent scale in Fahrenheit, we substitute the value of F in the equation as 77.

Therefore:

C = 5 (F - 32) / 9

C = 5 (77 - 32) / 9

Simplify the brackets first, before opening it.

C = 5 (45) / 9

C = 5 * 5

C = 25 Degree Celsius

Option C is correct

Maths is fun!