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Use the appropriate temperature formula to convert each temperature.

1. Convert [tex]$88^{\circ}$[/tex] Fahrenheit to Celsius.

2. Convert [tex]$30^{\circ}$[/tex] Celsius to Fahrenheit.

3. Convert [tex]$-40^{\circ}$[/tex] Fahrenheit to Celsius.

Answer :

Below is a detailed, step-by-step solution for converting the given temperatures.

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Step 1. Convert [tex]\( 88^\circ \)[/tex] Fahrenheit to Celsius

We use the temperature conversion formula:
[tex]\[
C = \frac{5}{9}(F - 32)
\][/tex]

For [tex]\( F = 88 \)[/tex], substitute into the formula:
[tex]\[
C = \frac{5}{9}(88 - 32)
\][/tex]

Calculate the difference:
[tex]\[
88 - 32 = 56
\][/tex]

Now, multiply by [tex]\(\frac{5}{9}\)[/tex]:
[tex]\[
C = \frac{5}{9} \times 56 = \frac{280}{9} \approx 31.11
\][/tex]

Thus, [tex]\( 88^\circ \)[/tex] Fahrenheit is approximately [tex]\( 31.11^\circ \)[/tex] Celsius.

────────────────────────────
Step 2. Convert [tex]\( 30^\circ \)[/tex] Celsius to Fahrenheit

The conversion formula from Celsius to Fahrenheit is:
[tex]\[
F = \frac{9}{5}C + 32
\][/tex]

For [tex]\( C = 30 \)[/tex], substitute into the formula:
[tex]\[
F = \frac{9}{5}(30) + 32
\][/tex]

First, compute [tex]\(\frac{9}{5} \times 30\)[/tex]:
[tex]\[
\frac{9}{5} \times 30 = 54
\][/tex]

Then, add 32:
[tex]\[
F = 54 + 32 = 86
\][/tex]

Thus, [tex]\( 30^\circ \)[/tex] Celsius is [tex]\( 86^\circ \)[/tex] Fahrenheit.

────────────────────────────
Step 3. Convert [tex]\( -40^\circ \)[/tex] Fahrenheit to Celsius

Again, we use the formula:
[tex]\[
C = \frac{5}{9}(F - 32)
\][/tex]

For [tex]\( F = -40 \)[/tex], substitute into the formula:
[tex]\[
C = \frac{5}{9}(-40 - 32)
\][/tex]

Calculate the difference:
[tex]\[
-40 - 32 = -72
\][/tex]

Now, multiply by [tex]\(\frac{5}{9}\)[/tex]:
[tex]\[
C = \frac{5}{9} \times (-72) = -40
\][/tex]

Thus, [tex]\( -40^\circ \)[/tex] Fahrenheit is exactly [tex]\( -40^\circ \)[/tex] Celsius.

────────────────────────────
Final Answers:
1. [tex]\( 88^\circ \)[/tex] Fahrenheit is approximately [tex]\( 31.11^\circ \)[/tex] Celsius.
2. [tex]\( 30^\circ \)[/tex] Celsius is [tex]\( 86^\circ \)[/tex] Fahrenheit.
3. [tex]\( -40^\circ \)[/tex] Fahrenheit is [tex]\( -40^\circ \)[/tex] Celsius.

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Rewritten by : Jeany