When the temperature is 20 degrees Celsius (C), what is it on the Fahrenheit (F) scale? Use the formula: [tex]$F = \left(\frac{9}{5} \times C\right) + 32$[/tex]

A. 62 degrees
B. 68 degrees
C. 78 degrees



Answer :

To convert temperatures from Celsius to Fahrenheit, we can use the formula:

[tex]\[ F = \left( \frac{9}{5} \times C \right) + 32 \][/tex]

We'll walk through the calculations for each of the given temperatures:

1. For 62 degrees Celsius:

[tex]\[ F = \left( \frac{9}{5} \times 62 \right) + 32 \][/tex]

- [tex]\(\frac{9}{5} \times 62 = 111.6\)[/tex]

- Adding 32 to 111.6:

[tex]\[ F = 111.6 + 32 = 143.6 \][/tex]

So, 62 degrees Celsius is equivalent to 143.6 degrees Fahrenheit.

2. For 68 degrees Celsius:

[tex]\[ F = \left( \frac{9}{5} \times 68 \right) + 32 \][/tex]

- [tex]\(\frac{9}{5} \times 68 = 122.4\)[/tex]

- Adding 32 to 122.4:

[tex]\[ F = 122.4 + 32 = 154.4 \][/tex]

Thus, 68 degrees Celsius is equivalent to 154.4 degrees Fahrenheit.

3. For 78 degrees Celsius:

[tex]\[ F = \left( \frac{9}{5} \times 78 \right) + 32 \][/tex]

- [tex]\(\frac{9}{5} \times 78 = 140.4\)[/tex]

- Adding 32 to 140.4:

[tex]\[ F = 140.4 + 32 = 172.4 \][/tex]

Therefore, 78 degrees Celsius is equivalent to 172.4 degrees Fahrenheit.

So, summarizing the conversions:

- 62 degrees Celsius is 143.6 degrees Fahrenheit.
- 68 degrees Celsius is 154.4 degrees Fahrenheit.
- 78 degrees Celsius is 172.4 degrees Fahrenheit.