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3 years ago

Hey guys!! U think u can help me?? pls :))

Mathematics

2 answers:

lora16 [44]3 years ago

8 0

Answer:

Step-by-step explanation:

The scale factor is the ratio of the image side to the corresponding side in the original, that is

scale factor = $\frac{12}{9}$ = $\frac{4}{3}$ = 1 $\frac{1}{3}$ → D

miss Akunina [59]3 years ago

7 0

3/4 i think im not that sure about it

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Answer:

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Step-by-step explanation:

$\frac{4k + 2}{k^{2}-4 }$ × $\frac{k-2}{2k+1}$

To solve the above, we need to follow the steps below;

4k+2 can be factorize, so that;

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k² - 4 can also be be expanded, so that;

k² - 4 = (k-2)(k+2)

Lets replace 4k +2 by 2 (2k + 1)

and

k² - 4 by (k-2)(k+2) in the expression given

$\frac{4k + 2}{k^{2}-4 }$ × $\frac{k-2}{2k+1}$

$\frac{2(2k+ 1)}{(k-2)(k+2)}$ × $\frac{k-2}{2k+1}$

(2k+1) at the numerator will cancel-out (2k+1) at the denominator, also (k-2) at the numerator will cancel-out (k-2) at the denominator,

So our expression becomes;

$\frac{2}{k + 2}$

Therefore, $\frac{4k + 2}{k^{2}-4 }$ × $\frac{k-2}{2k+1}$ = $\frac{2}{k + 2}$

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