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3 years ago

Cotx= is also equal to

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

8 0

$\huge\frak{Answer:-}$

$\rm{cot \: x = cos \: x \: sin \: x}$

KatRina [158]3 years ago

7 0

$\huge \mathtt \purple{Answer:-}$

$\sf \red{cot \: x \: = \: cos \: x \: sin \: x}$

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ikadub [295]

Answer:

The company must sell 60 or 70 items to obtain a weekly profit of 200.

Step-by-step explanation:

The profit is the difference between the revenue and the cost of a given task, therefore:

$\text{profit} = R - C\\\text{profit} = 66*x - 0.2*x^2 - (40*x + 640)\\\text{profit} = 66*x - 0.2*x^2 - 40*x - 640\\\text{profit} = - 0.2*x^2 + 26*x - 640$

To have a profit of 200, we need to sell:

$-0.2*x^2 + 26*x - 640 = 200\\-0.2*x^2 + 26*x -840 = 0\text{ } *\frac{-1}{0.2}\\x^2 -130 + -4200 = 0\\x_{1,2} = \frac{-(-130) \pm \sqrt{(-130)^2 - 4*1*(-4200)}}{2*1}\\x_{1,2} = \frac{130 \pm \sqrt{16900 + 16800}}{2}\\x_{1,2} = \frac{130 \pm \sqrt{100}}{2}\\x_{1,2} = \frac{130 \pm 10}{2}\\x_{1} = \frac{130 + 10}{2} = \frac{140}{2} = 70\\ x_{2} = \frac{130 - 10}{2} = \frac{120}{2} = 60$

The company must sell 60 or 70 items to obtain a weekly profit of 200.

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3 years ago

Find perpendicular,hypotenuse and base

vova2212 [387]

Step-by-step explanation:

In right angled triangle ABC,

Taking alpha as reference angle,

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Taking thita as reference angle,

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Keep smiling and hope u are satisfied with my answer.Have a good day :)

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Step-by-step explanation:

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