For one month Sierra calculated her home towns average high temp in degrees Fahrenheit she wants to convert that temp from degrees Fahrenheit to degrees Celsius using the function c(f)=5/9(f-32). What does C(F)

C(F) means Celcius temperature value from Fahrenheit temperature

Step-by-step explanation:

C(F) is Mathematically interpreted as C of F, this means the value of C obtained for a given F value, that is we have a relation, expression or formular exoressed in terms of F which can be used to obtain the Value of C for a given value of F by making necessary substitution.

Here the relation or expression is c(f)=5/9(f-32).

Hence, once we are given a particular F value, we can substitute that into the equation and obtain the corresponding C temperature value.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional