Which describes a relationship that varies directly? A. t = 85-5h, where t represents temperature and h represents number of hours between temperature readings
B. C = 12k, where C represents the cost on the electrical bill and k represents the electricity used
C. b = 1.2m + 120, where b represents the bank account balance and m represents the number of months
D. T = 120, where T represents the time to prepare dinner for a dinner party

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d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

lol we need to see what the question is asking about

step-by-step explanation:

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.

idk

step-by-step explanation: