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krok68 [10]
3 years ago
11

Which table shows a proportional relationship between miles traveled and gas used?

Mathematics
2 answers:
kati45 [8]3 years ago
6 0
270/15 = 135/ 7.5
cross multiply to see if it is a true proportion
(15)(135) = (270)(7.5)
2025 = 2025 (correct...so this is a true proportion)

answer is : bottom right one
Dovator [93]3 years ago
5 0

Answer:

last fourth table given in the figure shows the proportional relationship .

Step-by-step explanation:

Definition of proportional relationship

The relationship in which two quantities are varies proportional to each other .

a = kb

Where k is called the proportional constant .

Let us assume that the number of miles travelled be y .

let us assume that the gas used be x .

y\propto x

y = ca

Where c is the proportional constant .

In first table

Miles travelled = 27.3 mi

Gas used =1.5 gal

Putting in the formula

y = ca  

27.3 = 1.5c

\frac{27.3}{1.5}=c

c = 18.2

Miles travelled = 49.16 mi

Gas used = 3.8 gal

Putting in the formula

y = ca  

49.16 = 3.8c

\frac{49.16}{3.8}=c

c = 12.94 (Approx)

Thus the miles travelled is not vary with the gas used .

Therefore table not shows the proportional relationship .

Second Part

Miles travelled = 135 mi

Gas used = 7.4 gal

Putting in the formula

y = ca  

135 = 7.4c

\frac{135}{7.4}=c

c = 18.2

Miles travelled = 135.5 mi

Gas used = 7.9 gal

Putting in the formula

y = ca  

135.5 = 7.9c

\frac{135.5}{7.9}=c

c = 17.2 (Approx)

Thus the miles travelled is not vary with the gas used .

Therefore table not shows the proportional relationship .

Third table

Miles travelled = 120 mi

Gas used = 6.2 gal

Putting in the formula

y = ca  

120 = 6.2c

\frac{120}{6.2}=c

c = 19.4 (Approx)

Miles travelled = 180 mi

Gas used = 12.2 gal

Putting in the formula

y = ca  

180 = 12.2c

\frac{180}{12.2}=c

c = 14.8 (Approx)

Thus the miles travelled is not vary with the gas used .

Therefore table not shows the proportional relationship .

Fourth table

Miles travelled = 270 mi

Gas used = 15gal

Putting in the formula

y = ca  

270 = 15c

\frac{270}{15}=c

c = 18

Miles travelled = 135 mi

Gas used = 7.5 gal

Putting in the formula

y = ca  

135= 7.5c

\frac{135}{7.5}=c

c = 18

Thus the miles travelled is vary with the gas used .

Therefore table shows the proportional relationship .

The last fourth table given in the figure shows the proportional relationship .


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