5. yesterday the temperature at noon was 7.8 f. by midnight the temperature had decreased by 11.3 °f.
what is the temperature at midnight?
k cc
for

-3.5°F

Step-by-step explanation:

Subtract 11.3 from 7.8 to get 3.5. The just make the answer negative.

11.3 - 7.8 = 3.5.

Change 3.5 to -3.5.

  3×1/10 +5×1/100 +6×1/1000

Step-by-step explanation:

You have not shown Armando's work, but we know there are several ways that expanded form can be written:

  0.356 = 0.3 + 0.05 + 0.006

  = 3×0.1 + 5×0.01 + 6×0.001

  = 3×10^-1 + 5×10^-2 + 6×10^-3

When the place values are expressed as fractions, this is ...

  = 3×1/10 + 5×1/100 + 6×1/1000