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4 years ago

If y varies inversely as X and Y equals 5 when x equals 3 find X when Y is 15

Mathematics

1 answer:

omeli [17]4 years ago

5 0

Answer:

x = 1

Step-by-step explanation:

Given that y varies inversely as x then the equation relating them is

y = $\frac{k}{x}$ ← k is the constant of variation

To find k use the condition y = 5 when x = 3

k = yx = 5 × 3 = 15, thus

y = $\frac{15}{x}$ ← equation of variation

When y = 15 then

15 = $\frac{15}{x}$ ( multiply both sides by x )

15x = 15 ( divide both sides by 15 )

x = 1

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3 years ago

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3 years ago

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Rudiy27

Answer:

A. {(1, 6.7), (2, 6.4), (3, 6.1)}

Step-by-step explanation:

The watering can dispenses water at a rate of 0.3 gallon per minute and the original volume of water in the can was 7 gallons.

Let y represent the volume of water in the can in gallons

Let x represent time in minutes

f(x) = y = 7 – 0.3(x)

When x = 1,

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y = 7 – 0.3(2)

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3 years ago

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valina [46]

Answer:

24. x = 8.

25. x = -9, 10.

Step-by-step explanation:

The zeros of the functions are the solutions to the equation when y=0. To find the solution, factor each equation.

24. Look for two factors that multiply to 64 and add to -16. The factors are -8 and -8. Write them in binomial forms.

(x-8)(x-8)

So x = 8.

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So x = -9, 10.

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3 years ago

If y varies inversely as X and Y equals 5 when x equals 3 find X when Y is 15​

If y varies inversely as X and Y equals 5 when x equals 3 find X when Y is 15