Question

Use the formula Upper F equals nine fifths Upper C plus 32 to convert negative 25 degrees C to degrees Fahrenheit.What formula gives the conversion from degrees Fahrenheit to degrees Celsius?

A. C=F-32-(5/9)
B. C=(5/9)(F-32)
C. C=(9/5)(F+32)
D. C=(9/5)(F-32)

Answer 1

Answer: B.
`C=(5)/(9)(F-32)`

Explanation:

The given formula :
`F=(9)/(5)C+32`

To convert this formula in terms of C , we first Subtract 32 on both sides , we get

`F-32=(9)/(5)C`

Now multiply 5 on both the sides , we get

`5(F-32)=9C`

Divide both sides by 9 we get

`(5)/(9)(F-32)=C`

OR

`C=(5)/(9)(F-32)`

Therefore , the formula gives the conversion from degrees Fahrenheit to degrees Celsius will be :-

`C=(5)/(9)(F-32)`

Hence, the correct answer : B.
`C=(5)/(9)(F-32)`