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FrozenT [24]
3 years ago
12

Using Algebra tiles, show a model of 3x.​

Mathematics
1 answer:
jenyasd209 [6]3 years ago
3 0

its the first option.

tiles of X and tiles of 1 are different

3 tiles of "X" = 3X

3 tiles of " 1 " = 3

option 3 does not mean 3X, it just means 3X + 3

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ii) Here let's substitute x+6 with t. Doing so we have:
 
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iii) Collecting the variables on the same side, and factorizing t we have:
 
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Now we solve for x in x+6=t:

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iv) Now we check these values in the original equation  \sqrt{x+6}=x+6 :

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b) \sqrt{-5+6}=-5+6. ⇒ 1=1 ; Correct.



Answer: <span>x = −6 and x = −5 </span>
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