Answer :
To convert a temperature from degrees Fahrenheit to degrees Celsius, you can use the following steps:
1. Start with the temperature in Fahrenheit. In this case, it's [tex]\(78^\circ F\)[/tex].
2. Subtract 32 from the Fahrenheit temperature. For Barbara, she did this first step as:
[tex]\[
78 - 32 = 46
\][/tex]
3. Next, multiply the result by [tex]\(\frac{5}{9}\)[/tex]. This is the step needed to complete the conversion to Celsius:
[tex]\[
46 \times \frac{5}{9}
\][/tex]
By following these steps, the correct next action for Barbara after subtracting 32 is to multiply 46 by [tex]\(\frac{5}{9}\)[/tex]. This will give her the temperature in degrees Celsius.
1. Start with the temperature in Fahrenheit. In this case, it's [tex]\(78^\circ F\)[/tex].
2. Subtract 32 from the Fahrenheit temperature. For Barbara, she did this first step as:
[tex]\[
78 - 32 = 46
\][/tex]
3. Next, multiply the result by [tex]\(\frac{5}{9}\)[/tex]. This is the step needed to complete the conversion to Celsius:
[tex]\[
46 \times \frac{5}{9}
\][/tex]
By following these steps, the correct next action for Barbara after subtracting 32 is to multiply 46 by [tex]\(\frac{5}{9}\)[/tex]. This will give her the temperature in degrees Celsius.