3 years ago

The weights of 2-pound bags of Best Dog Food are approximately normally distributed with a given mean ul and

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

7 0

Answer: 99.7%

Step-by-step explanation:

Edg 2020

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

7.5+2.3y-y

Subtract y

7.5+2.3

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siniylev [52]

Answer:

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

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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Answer:

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Step-by-step explanation:

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