Question

transforme da escala celsius para fohrenheit
a- 40°
b-25°
c-75°
d-15°
por favor me ajuem

Answer 1

Resolução da questão, veja:

Letra ''A'':

Converter 40 ºC para ºF, veja:

$\dfrac{\ºC}{5}} = \dfrac{\ºF-32}{9}}\\\\\\ \dfrac{40}{5}} = \dfrac{\ºF-32}{9}}\\\\\\\ 5~\cdot~(\ºF-32) = 360\\\\\\ 5\ºF - 160 = 360\\\\\ 5\ºF = 360 + 160\\\\\\ 5\ºF = 520\\\\\\\ \ºF = \dfrac{520}{5}}\\\\\\\\\ \large\boxed{\boxed{\boxed{ \ºF = 104.}}}}}}}$

Ou seja, 40 °C equivale a 104 °F.

Letra ''B'':

Converter 25 °C para °F, veja:

$\dfrac{\ºC}{5}} = \dfrac{\ºF-32}{9}}\\\\\\\ \dfrac{25}{5}} = \dfrac{\ºF-32}{9}}\\\\\\ 5~\cdot~(\ºF-32) = 225\\\\\\ 5\ºF - 160 = 225\\\\\\ 5\ºF = 225 + 160\\\\\\ 5\ºF = 385\\\\\\\ \ºF = \dfrac{385}{5}}\\\\\\\\ \large\boxed{\boxed{\boxed{ \ºF =77.}}}}$

Ou seja, 25 °C equivale a 77 °F.

Letra ''C'':

Converter 75 °C para °F, veja:

$\dfrac{\ºC}{5}} = \dfrac{\ºF-32}{9}}\\\\\\\ \dfrac{75}{5}} = \dfrac{\ºF-32}{9}}\\\\\\ 5~\cdot~(\ºF-32) = 675\\\\\\ 5\ºF-160 = 675\\\\\\ 5\ºF = 675 + 160\\\\\\ 5\ºF = 835\\\\\\ \ºF = \dfrac{835}{5}}\\\\\\\\ \large\boxed{\boxed{\boxed{ \ºF = 167.}}}}$

Ou seja, 75 °C equivale a 167 °F.

Letra ''D'':

Converter 15 °C para °F, veja:

$\dfrac{\ºC}{5}} = \dfrac{\ºF-32}{9}}\\\\\\ \dfrac{15}{5}} = \dfrac{\ºF-32}{9}}\\\\\\\ 5~\cdot~(\ºF-32) = 135\\\\\\ 5\ºF - 160 = 135\\\\\\ 5\ºF = 135 + 160\\\\\\ 5\ºF = 295\\\\\\\ \ºF = \dfrac{295}{5}}\\\\\\\\ \large\boxed{\boxed{\boxed{ \ºF =59.}}}}$

Ou seja, 15 °C equivale a 59 °F.

Espero que te ajude. :).