Answer:
what is this topic in math?
Yes, notice for every 10 degrees in Celsius you have 18 degrees Fahrenheit.
32 is the freezing point of water in F, and 0 is the freezing point of water in C.
So it is starting at freezing point, every time you add 10 in C you also add 18 to F.
They show the same temperature just on different scales.
So in order to find line AC you must find line AD and DC then plus them together.
to find AD use Pythagoras theorem
a^2 = c^2 - b^2
AD^2 = 7.5^2 - 6.5^2
AD^2 = 56.25 - 42.25
AD^2 = 14
square root both sides to get rid of the ^2
AD ≈ 3.7 or 3.74
Do the same for DC
DC^2 = 10^2 - 6.5^2
DC^2 = 100 - 42.25
DC^2 = 57.75
DC ≈ 7.6
now plus AD and DC which should give u 11.3
Yo download photos math in take a pic of your problem in it would give you your answer