Answer :
To convert Fahrenheit to Celsius, the formula used is
[tex]$$
C = \frac{5}{9}(F - 32),
$$[/tex]
where [tex]$F$[/tex] is the temperature in Fahrenheit.
Barbara already subtracted 32 from 78°F:
[tex]$$
78 - 32 = 46.
$$[/tex]
The next step is to multiply the result (46) by [tex]$\frac{5}{9}$[/tex]. This step adjusts the difference according to the Celsius scale.
Thus, the correct next step is to multiply 46 by [tex]$\frac{5}{9}$[/tex].
[tex]$$
C = \frac{5}{9}(F - 32),
$$[/tex]
where [tex]$F$[/tex] is the temperature in Fahrenheit.
Barbara already subtracted 32 from 78°F:
[tex]$$
78 - 32 = 46.
$$[/tex]
The next step is to multiply the result (46) by [tex]$\frac{5}{9}$[/tex]. This step adjusts the difference according to the Celsius scale.
Thus, the correct next step is to multiply 46 by [tex]$\frac{5}{9}$[/tex].