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3 years ago

7/8x5/7 as a fraction

Mathematics

2 answers:

il63 [147K]3 years ago

8 0

the answer is 5x/8

hope this helps

melisa1 [442]3 years ago

7 0

Answer:

$\frac{5}{8}$

Step-by-step explanation:

$\frac{7}{8}$ × $\frac{5}{7} = \frac{35}{56}$
$\frac{35}{56} = \frac{5}{8}$

I hope this helps!

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Aleonysh [2.5K]

Its D .HOPE IT HELPS !

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3 years ago

please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

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1 year ago