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Iteru [2.4K]
3 years ago
15

If y varies inversely with x, find the constant of variation x= -40 and y= 4

Mathematics
1 answer:
Daniel [21]3 years ago
8 0

Answer:

y=\frac{-160}{x}, \ \ \ \ k=-160

Step-by-step explanation:

let k be a constant written as:

y=\frac{k}{x}

It is given that y=4, x=-40

#We substitute x, y values in our function:

y=\frac{k}{x}\\\\4=\frac{k}{-40}\\\\k=4\times-40\\\\k=-160

We substitute the constant value in the equation:

y=\frac{k}{x}, k=-160\\\\y=\frac{-160}{x}

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Jacob is 5 5/6 feet tall. Linda is 5 1/4 feet tall. How much taller is Jacob?
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This problem boils down to 5/6 - 1/4

To subtract these fractions you need a common denominator.

I'll use 12

The first fraction becomes 10/12 and the second fraction becomes 3/12

10/12-3/12 = 7/12

So Jacob is 7/12 of a foot taller than Linda.

Also note than since 12 inches = 1 foot, you could say Jacob is 7 inches taller than Linda
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Please help! I’ll also give brainliest! Thank you!
Andre45 [30]

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the symbol without a line through it means part of a set, with the line means excluded form

Step-by-step explanation:

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2 years ago
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3 years ago
5 years ago, the age of a man was 7 times the age of his son. After five years, the age of the man will be 3 times the age of hi
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Answer:

10 years

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Step-by-step explanation:

let present ag e of son=x

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after 5 years

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