La ecuación
C = 5 / 9(F - 32)
relaciona las lecturas de temperatura en las escalas Fahrenheit y Celsius.
¿Qué valores de F corresponden a los valores de C, tales que
25≤C≤55
Con 25
<img src="https://tex.z-dn.net/?f=25%3D%5Cfrac%7B5%7D%7B9%7D%5Ccdot%20%5Cleft%28f-32%5Cright%29" />
<img src="https://tex.z-dn.net/?f=9%5Ccdot%20%5Cfrac%7B5%7D%7B9%7D%5Cleft%28f-32%5Cright%29%3D25%5Ccdot%20%5C%3A9" />
<img src="https://tex.z-dn.net/?f=5%5Cleft%28f-32%5Cright%29%3D225" />
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B5%5Cleft%28f-32%5Cright%29%7D%7B5%7D%3D%5Cfrac%7B225%7D%7B5%7D" />
<img src="https://tex.z-dn.net/?f=f-32%3D45%0A%0Af%3D77" />
Con 55
<img src="https://tex.z-dn.net/?f=55%3D%5Cfrac%7B5%7D%7B9%7D%5Cleft%28f-32%5Cright%29" />
<img src="https://tex.z-dn.net/?f=9%5Ccdot%20%5Cfrac%7B5%7D%7B9%7D%5Cleft%28f-32%5Cright%29%3D55%5Ccdot%20%5C%3A9" />
<img src="https://tex.z-dn.net/?f=5%5Cleft%28f-32%5Cright%29%3D495" />
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B5%5Cleft%28f-32%5Cright%29%7D%7B5%7D%3D%5Cfrac%7B495%7D%7B5%7D" />
<img src="https://tex.z-dn.net/?f=f-32%3D99%0A%0Af%3D131" />
Respuesta 77 ≤ F ≤ 131.