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

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Step 1:
I'll solve this temperature conversion problem step by step, following the precise LaTeX formatting guidelines:

Step 2:
: Identify the given information

- Temperature in Celsius: $$20^{\circ}\mathrm{C}
- Conversion formula: ^{\circ}F = ^{\circ}C \times \frac{9}{5} + 32

Step 3:
: Substitute the Celsius temperature into the formula

^{\circ}F = 20 \times \frac{9}{5} + 32

Step 4:
: Multiply 20 \times \frac{9}{5}

^{\circ}F = \frac{20 \times 9}{5} + 32
^{\circ}F = \frac{180}{5} + 32

Step 5:
: Simplify the fraction

^{\circ}F = 36 + 32

Step 6:
: Calculate the final temperature

^{\circ}F = 68

Final Answer

20^{\circ}\mathrm{C} is equivalent to 68^{\circ}\mathrm{F}.