Which equation could you use to solve for x in the proportion 4/5=9/x ?

1 answer:

7 0

$\frac{9}{x} = \frac{4}{5}$
dividing both sides by 9
$\frac{1}{x} = \frac{4}{5 \times 9}$
rasing both sides to the power of -1
$x = \frac{5 \times 9}{4} = \frac{45}{4}$

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Answer:

Proportion states that the two fractions or ratios are equal

As per the statement: Mrs. Hwang is taking her vehicle to the shop to have the gas tank expanded by 10 gallons. Now, it costs her $42.56 to fill the tank. Once the new tank is in, it will cost her $72.96

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