3 years ago

Y = (x) = (1/9)^x Find f(x) when x = (1/2) Round your answer to the nearest thousandth.

Mathematics

1 answer:

irina [24]3 years ago

6 0

Answer:

0.333

Step-by-step explanation:

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Brilliant_brown [7]

<h3>The solutions are:</h3>

$(0, -1)\ and\ (\frac{1}{3}, 0)$

<em><u>Solution:</u></em>

<em><u>Given that,</u></em>

$y = 3x^2 + 2x-1-------- eqn 1\\\\\3x-y=1 ------- eqn 2$

From eqn 2,

3x - y = 1

y = 3x - 1

<em><u>Substitute the above in eqn 1</u></em>

$3x -1 = 3x^2 + 2x - 1\\\\3x^2 + 2x - 3x =0\\\\3x^2 -x = 0\\\\x(3x - 1) = 0\\\\Therefore,\\\\x = 0\\\\And\\\\3x - 1 = 0\\\\3x = 1\\\\x = \frac{1}{3}$

Substitute x = 0 in eqn 2

3(0) - y = 1

y = -1

Substitute x = 1/3 in eqn 2

$3\frac{1}{3} - y = 1\\\\ 1 - y = 1\\\\y = 0$

Thus solutions are:

$(0, -1)\ and\ (\frac{1}{3}, 0)$

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Step-by-step explanation:

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2 years ago

Need help finding the equation. A) y=2x B) y=5x C) y=x D) y=50x

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Step-by-step explanation:

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