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2 years ago

Evaluate |x|/x if x is a non zero interger

Mathematics

1 answer:

Ira Lisetskai [31]2 years ago

4 0

If $x$ is positive, then $|x|=x$ and $\dfrac{|x|}x=1$ .

If $x$ is negative, then $|x|=-x$ and $\dfrac{|x|}x=-1$ .

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Solve.<br> x^2+9x+2=0<br> thanks!

shtirl [24]

Step one:
ALWAYS set equation equal to zero, which in this case has already been done for us.

Step two:
Figure out what formula you need to use in order to solve in this case I'd use the Quadratic formula.

a=1
b=9
c=2

Quadratic formula:
$x = \frac{ - b + - \sqrt{(b) ^{2} - 4(a)(c)} }{2(a)}$
Then you would plug in the information.
$x = \frac{ - 9+ - \sqrt{(9) {}^{2} - 4(1)(2) } }{2(1)}$
The solve for what is underneath the square root ONLY.
$x = \frac{ - 9 + - \sqrt{73} }{2}$
Since you cannot solve this any further, your final two answers are...
$x = \frac{ - 9 + \sqrt{73} }{2}$
$x = \frac{ - 9 - \sqrt{73} }{2}$

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dusya [7]

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3 years ago

What is 372.457÷ by 274.674 need help right now please :(

Afina-wow [57]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Can you solve the inequality for: y + 13 < 4

MaRussiya [10]

Answer:

$y + 13 = 4 \\ y = 4 - 13 \\ y = - 9$

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3 years ago

Explain how you would solve this problem for x

borishaifa [10]

Answer:

x = 18.

Step-by-step explanation:

The 2 amgles are adjacent so add up to 180 degrees so we have:

x^2 - 11x + 3x = 180

x^2 - 8x - 180 = 0

(x -18)(x + 10) = 0

x = -10, 18.

x = -10 cannot be correct because that would make the 3x angle = -30.

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3 years ago

Evaluate |x|/x if x is a non zero interger​

Evaluate |x|/x if x is a non zero interger