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adell [148]
3 years ago
9

Gas Costs $2.88 per gallon. Albert filled up his car for $43.20. How many gallons of gas did he get?

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
6 0
Albert filled his tank with 40 gallons of gas
ladessa [460]3 years ago
3 0
15 gallons, sense 43.20÷2.88= 15
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Answer:

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Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality (k) is described by the following expression:

k = \frac{y}{x} (1)

Where:

x - Input.

y - Output.

If we know that (x_{1}, y_{1}) = (13, 45.5), (x_{2}, y_{2}) = (14, 49) and (x_{3}, y_{3}) = (15, 52.5), then the constants of proportionalities of each ordered pair are, respectively:

k_{1} = \frac{y_{1}}{x_{1}}

k_{1} = \frac{45.5}{13}

k_{1} = \frac{7}{2}

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k_{2} = \frac{49}{14}

k_{2} = \frac{7}{2}

k_{3} = \frac{y_{3}}{x_{3}}

k_{3} = \frac{52.5}{15}

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Since k_{1} = k_{2} = k_{3}, the constant of proportionality is 3.5.

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to shift down by 4, subtract 4 outside of the absolute value.

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vova2212 [387]

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