3 years ago

Please help its for summer and i forgot how to do it plz help me

1 answer:

4 0

You divide 30 miles by 10 to get 3 miles, so you do the same for the bottom.
20 hours divided by 10 = 2 hours.

2 hours is the answer.

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aev [14]

Given that,

y varies directly with x and y = 10 when x = 20.

To find,

The value of y when x = 15.

Solution,

$y\propto x\\\\y=kx$

Put x = 20 and y = 10

$k=\dfrac{y}{x}\\\\k=\dfrac{10}{20}\\\\=\dfrac{1}{2}$

Put k = 1/2 and x = 15 to find the value of y.

$y=\dfrac{1}{2}\times 15\\\\=7.5$

So, the value of y is 7.5

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3 years ago

frozen [14]

A is the right answer

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3 years ago

Alecsey [184]

Answer:

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Step-by-step explanation:

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Makovka662 [10]

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3 years ago

Svetradugi [14.3K]

Answer:

the answer is (A)

Step-by-step explanation:

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2 years ago