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Lady_Fox [76]
3 years ago
7

The number of boys b in class is 3 times the number of girls g in the class

Mathematics
2 answers:
mash [69]3 years ago
8 0
B = 3g is the equation
kifflom [539]3 years ago
5 0
B=3g... I assume this is what you were looking for.
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50 lbs.

Step-by-step explanation:

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How do I solve: 2 sin (2x) - 2 sin x + 2√3 cos x - √3 = 0
ziro4ka [17]

Answer:

\displaystyle x = \frac{\pi}{3} +k\, \pi or \displaystyle x =- \frac{\pi}{3} +2\,k\, \pi, where k is an integer.

There are three such angles between 0 and 2\pi: \displaystyle \frac{\pi}{3}, \displaystyle \frac{2\, \pi}{3}, and \displaystyle \frac{4\,\pi}{3}.

Step-by-step explanation:

By the double angle identity of sines:

\sin(2\, x) = 2\, \sin x \cdot \cos x.

Rewrite the original equation with this identity:

2\, (2\, \sin x \cdot \cos x) - 2\, \sin x + 2\sqrt{3}\, \cos x - \sqrt{3} = 0.

Note, that 2\, (2\, \sin x \cdot \cos x) and (-2\, \sin x) share the common factor (2\, \sin x). On the other hand, 2\sqrt{3}\, \cos x and (-\sqrt{3}) share the common factor \sqrt[3}. Combine these terms pairwise using the two common factors:

(2\, \sin x) \cdot (2\, \cos x - 1) + \left(\sqrt{3}\right)\, (2\, \cos x - 1) = 0.

Note the new common factor (2\, \cos x - 1). Therefore:

\left(2\, \sin x + \sqrt{3}\right) \cdot (2\, \cos x - 1) = 0.

This equation holds as long as either \left(2\, \sin x + \sqrt{3}\right) or (2\, \cos x - 1) is zero. Let k be an integer. Accordingly:

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Any x that fits into at least one of these patterns will satisfy the equation. These pattern can be further combined:

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  • \displaystyle x =- \frac{\pi}{3} +2\,k\, \pi.
7 0
3 years ago
In the school library, there is 28 fiction items to every three non-fiction items. which is the best estimate of how many total
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Follow the PEDMAS order of operation

Add and subtract left (left to right )

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Answer:


Step-by-step explanation:

1/40=3/120

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