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3 years ago

11

What is rational number

1 answer:

Lorico [155]3 years ago

3 0

I cap this from my book
Hope it can help u

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What are the coordinates of point BBB on \overline{AC} AC start overline, A, C, end overline such that the ratio of ABABA, B to

Nady [450]

I think it’s gonna be C

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3 years ago

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What are the zeros of the quadratic function?

Xelga [282]

The zeroes are -3 and -4

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3 years ago

Let f(x) = x+2/x+6 <br> f^-1(-6) =

GREYUIT [131]

We can explicitly find the inverse. If $f^{-1}(x)$ is the inverse of $f(x)$ , then

$f\left(f^{-1}(x)\right) = \dfrac{f^{-1}(x)+2}{f^{-1}(x)+6} = x$

Solve for the inverse :

$\dfrac{f^{-1}(x) + 2}{f^{-1}(x) + 6} = x$

$\dfrac{f^{-1}(x) + 6 - 4}{f^{-1}(x) + 6} = x$

$1 - \dfrac4{f^{-1}(x) + 6} = x$

$1 - x = \dfrac4{f^{-1}(x) + 6}$

$f^{-1}(x) + 6 = \dfrac4{1-x}$

$\implies f^{-1}(x) = \dfrac4{1-x} - 6$

Then when x = -6, we have

$f^{-1}(-6) = \dfrac4{1-(-6)} - 6 = \dfrac47-6 = \boxed{-\dfrac{38}7}$

Alternatively, we can first solve for x such that $f(x) = -6$ . Then taking the inverse of both sides, $x = f^{-1}(-6)$ . (The difference in this method is that we don't compute the inverse for all x.)

We have

$\dfrac{x+2}{x+6} = -6$

$x + 2 = -6 (x + 6)$

$x + 2 = -6x - 36$

$7x = -38$

$\implies x = \boxed{-\dfrac{38}7}$

8 0

3 years ago

PLEASE HELP WILL MARK BRAINLIEST

n200080 [17]

Answer: (4,8)

Step-by-step explanation:

(8) = (4) + 4

8 = 8

TRUE

(8) = 3(4) - 4

8 = 12 -4

8=8

TRUE

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3 years ago

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Please Simplify (3 x-10) ^3

masya89 [10]

Answer: 27 x 3 − 270 x 2 + 900 x − 1000

Step-by-step explanation: Expand the expression.

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3 years ago