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Convert the following temperatures from Fahrenheit to Celsius or vice versa. a. 90°F b. 55°C c. -20°C a. 90°F=| °C Туре an integer or decimal rounded to one decimal place as needed)

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silviforast07

Answer:

a. 32,2°C

b. 131 °F

c. -28,9°C

Step-by-step explanation:

We must consider the following formula:

(x-32) × 5/9 = y , where x= temperature in °F an y= temperature in °C

Then,

a) In the formula we replace x=90° F, and we have: y = (90-32)× 5/9 = 32,2 °C

b)  In the formula we replace y=55° C, and we have: 55 = (x-32)× 5/9 ⇒ 55×9/5 =x-32 ⇒ x=(55×9/5)+32 = 131 °F

c) In the formula we replace y= -20° C and we have: -20 = (x-32)× 5/9 = -4°F

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