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3 years ago

Eric drove 275 miles in 5 hours. At the same rate how long would it take him to drive 495 miles?

2 answers:

4 0

$\bf \begin{array}{ccll} miles&hours\\ \cline{1-2} 275&5\\ 495&x \end{array}\implies \cfrac{275}{495}=\cfrac{5}{x}\implies \cfrac{5}{9}=\cfrac{5}{x} \\\\\\ 5x=45\implies x=\cfrac{45}{5}\implies x=9$

Rzqust [24]3 years ago

4 0

Answer:

9 hours.

Step-by-step explanation: divide 275 by 5 and you get 55. So he drove 55 miles every hour. Now divide 495 by 55 and you get 9.

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3 years ago

Someone please help me with this

Nataly_w [17]

Answer:

$a.\ D=\dfrac{1}{5}t$

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Step-by-step explanation:

Let $D$ be the distance in miles and

$t$ be the time in seconds and

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$Distance = Speed \times Time\\OR\\D=st$

Given that:

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Answer a:

Putting the value of $s$ back in the formula to find the direct variation equation for the relationship between time and distance:

$D=\dfrac{1}{5}t$

Answer b:

Using the above formula and putting $D=4\ miles$ :

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3 years ago

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