Question

convert 21.28°f to degrees celsius. round your answer to the correct number of significant figures.

Explanation:

Step1: Recall the conversion formula

The formula to convert Fahrenheit ($F$) to Celsius ($C$) is $C=\frac{5}{9}(F - 32)$.

Step2: Substitute the given value

Substitute $F = 21.28$ into the formula: $C=\frac{5}{9}(21.28 - 32)$.
First, calculate the value inside the parentheses: $21.28-32=- 10.72$.
Then, multiply by $\frac{5}{9}$: $C=\frac{5}{9}\times(-10.72)\approx - 5.96$.

Answer:

$-5.96^{\circ}C$