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Tpy6a [65]
2 years ago
5

Jennifer figures that she uses 2 pens per month. she started the year with 10 pens. how do i write the equation that represents

the number of pens, y, she will have after x months
Mathematics
1 answer:
andrew-mc [135]2 years ago
5 0
So it would be 10-2x . X would be the months and it would be -2 because she uses that much per month
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"30% off" translates into multiplying the original price by 1.00 - 0.30, or 0.70.

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Answer:

a) x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}, x_{2} = \frac{5\pi}{6}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}, b) x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}, x_{2} = \frac{5\pi}{3}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}

Step-by-step explanation:

a) The equation must be rearranged into a form with one fundamental trigonometric function first:

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\sqrt{3} \cdot \left(\frac{1}{\sin x} \right) - 2 = 0

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x_{1} = \frac{\pi}{3}\pm 2\pi \cdot i, \forall i \in \mathbb{N}_{O}

x_{2} = \frac{5\pi}{6}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}

b) The equation must be simplified first:

\cos x + 1 = - \cos x

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x_{2} = \frac{5\pi}{3}\pm 2\pi\cdot i, \forall i \in \mathbb{N}_{O}

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2 years ago
Read 2 more answers
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