2 years ago

Write 18/31 in simplest form. Use / for fraction line.

Mathematics

1 answer:

nasty-shy [4]2 years ago

7 0

Answer: 18/31

It is already the simplest form, so it cannot be simplified.

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2 years ago

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S = 7/(1 -(-7z))

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Solve the equation on the interval [0, 2pi): 12cos^2 x-9=0<br><br><br> What to do?

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$\large\boxed{x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}\ \vee\ x=\dfrac{7\pi}{6}\ \vee\ x=\dfrac{11\pi}{6}}$

Step-by-step explanation:

$12\cos^2x-9=0\qquad\text{add 9 to both sides}\\\\12\cos^2x=9\qquad\text{divide both sides by 12}\\\\\cos^2x=\dfrac{9}{12}\\\\\cos^2x=\dfrac{9:3}{12:3}\\\\\cos^2x=\dfrac{3}{4}\to\cos x=\pm\sqrt{\dfrac{3}{4}}\\\\\cos x=\pm\dfrac{\sqrt3}{2}\\\\\text{Look at the picture}\\\\x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}\ \vee\ x=\dfrac{7\pi}{6}\ \vee\ x=\dfrac{11\pi}{6}$

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3 years ago

Write 18/31 in simplest form. Use / for fraction line.​

Write 18/31 in simplest form. Use / for fraction line.