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omeli [17]
3 years ago
14

Multiplying radicals

Mathematics
1 answer:
Mazyrski [523]3 years ago
8 0

\bf (\sqrt{8x})(5\sqrt{2x})\implies 5\sqrt{2x\cdot 8x}\implies 5\sqrt{16x^2}\implies 5\sqrt{4^2x^2} \\\\\\ 5\sqrt{(4x)^2}\implies 5(4x)\implies 20x

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Can someone help me?
hoa [83]

Answer:

Step-by-step explanation:

If arccos (√3 / 2) = β, then cos β = adjacent side / hypotenuse = √3 / 2.  This tells us immediately that the adjacent side length is √3 and the hypotenuse is 2.  Via the Pythagorean Theorem, we know that the third side is 1.  

This information rules out the 1st and 3rd answer choices.

Because cos 30° = adj / hyp = √3 / 2, we can conclude that the correct answer is the 4th one:  30°, 60°, 90°

5 0
3 years ago
Solve for x……………………….
Jobisdone [24]

Answer:

66

Step-by-step explanation:

Find other side:

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------------------

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-------------------

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Hope this helped.

4 0
3 years ago
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Step-by-step explanation:

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Rus_ich [418]
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