The temperature at the top of Mt. Washington one morning was -10 degrees Fahrenheit. With the conversion formula C=5/9(F-32). What was the temperature in degrees Celsius (to the nearest degree)?

just plug it in

C = (5/9)(-10-32)
= (5/9)(-42) = -23.333... or appr -23°

To convert a temperature from Fahrenheit to Celsius, we can use the conversion formula C = (5/9)(F - 32), where C represents degrees Celsius and F represents degrees Fahrenheit.

In this case, we are given a temperature of -10 degrees Fahrenheit at the top of Mt. Washington. To find the temperature in degrees Celsius, we will substitute -10 for F in the formula and solve for C.

C = (5/9)(-10 - 32)
C = (5/9)(-42)
C = -210/9
C ≈ -23

Therefore, the temperature at the top of Mt. Washington in degrees Celsius (rounded to the nearest degree) was approximately -23 degrees Celsius.