Question

20 Cgraus para F
36 F para K
40 Kelvin para graus C

Answer 1

Explicação passo-a-passo:

$\dfrac{c}{5} = \dfrac{f - 32}{9}$

$\dfrac{20}{5} = \dfrac{f - 32}{9}$

$4 = \dfrac{f - 32}{9}$

$f - 32 = 4 \times 9$

$f - 32 = 36$

$f = 36 + 32$

$f = > 68 {}^{0}$

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$\dfrac{f - 32}{9} = \dfrac{k - 273}{5}$

$\dfrac{36 - 32}{9} = \dfrac{k - 273}{5}$

$\dfrac{4}{9} = \dfrac{k - 273}{5}$

$9(k - 273) = 4 \times 5$

$9k - 2457 = 20$

$9k = 20 + 2457$

$9k = 2477$

$k = \dfrac{2477}{9}$

$k = > 275.22 {}^{0}$

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$k - 273 = c$

$40 - 273 = c$

$- 233 = c$

$c = > - 233 {}^{0}$