Question

The formula d = 3/2(100 - C) relates d, the temperature measured on the Delisle scale, in degrees, and C, the temperature measured on the Celsius scale, also in degrees. What is the temperature in degrees Celsius when the temperature in degrees Delisle is 78 degrees?

a. C = 50
b. C = 68
c. C = 32
d. C = 86

Answer 1

The temperature in degrees Celsius when the temperature in degrees Delisle is 78 degrees is C = -2.

Step-by-step explanation:

To find the temperature in degrees Celsius when the temperature in degrees Delisle is 78 degrees, we can use the given formula: d = 3/2(100 - C). Let's substitute d = 78 and solve for C.

78 = 3/2(100 - C)

78 = (150 - 3C)/2

156 = 150 - 3C

6 = -3C

C = -2

The temperature in degrees Celsius when the temperature in degrees Delisle is 78 degrees is C = -2.