3 years ago

Which could be the value of the third side of a triangle with sides 3 and 4? A. 3 B. 7 C. 12 D. 20

Mathematics

1 answer:

LiRa [457]3 years ago

3 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

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Answer:

➩ $x=2,-\frac{2}{3}$

Step-by-step explanation:

$\sqrt{4x^2}=x+2$

➨ We can also solve by completing both squares, however. Since we can pull out the square root.

$\sqrt{4x^2}=|2x|$ ➩ Define of Absolute Value/Square Root

➩ $\sqrt{x^2}=|x|$

Thus, our new equation is ➩ $|2x|=x+2$

To solve an absolute-value equation, let there be two conditions.

➨ Where x ≥ 0

$2x=x+2\\$

Move x to another side

$2x-x=2\\x=2$

➨ Where x < 0

$-2x=x+2\\-2x-x=2\\-3x=2\\x=\frac{2}{-3}\\x=-\frac{2}{3}$

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3 years ago

Alyssa sold half of her comic books and then bought 8 more. She now has

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Answer:

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Step-by-step explanation:

First find how many she had before buying 8 more-

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Then multiply that by 2

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The had 8 books to begin with

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2 years ago

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Solve.

miss Akunina [59]

$4(a+2) = 8 +4a\\
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3 years ago

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