Answer :
To convert from degrees Fahrenheit to degrees Celsius, we use the conversion formula:
[tex]$$
C = (F - 32) \cdot \frac{5}{9}
$$[/tex]
Barbara first subtracts 32 from 78°F:
[tex]$$
78 - 32 = 46
$$[/tex]
The next step is to multiply 46 by [tex]$\frac{5}{9}$[/tex]. This gives the temperature in degrees Celsius:
[tex]$$
46 \cdot \frac{5}{9} \approx 25.56^\circ C
$$[/tex]
Thus, the correct answer is to multiply 46 by [tex]$\frac{5}{9}$[/tex].
[tex]$$
C = (F - 32) \cdot \frac{5}{9}
$$[/tex]
Barbara first subtracts 32 from 78°F:
[tex]$$
78 - 32 = 46
$$[/tex]
The next step is to multiply 46 by [tex]$\frac{5}{9}$[/tex]. This gives the temperature in degrees Celsius:
[tex]$$
46 \cdot \frac{5}{9} \approx 25.56^\circ C
$$[/tex]
Thus, the correct answer is to multiply 46 by [tex]$\frac{5}{9}$[/tex].