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3 years ago

What is the circumference of the circle is the top is 6

Mathematics

1 answer:

kaheart [24]3 years ago

7 0

C = d × pi
C = 6 × 3.14
C = 18.84

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3 years ago

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Integrate the following

enot [183]

I suppose you mean to have the entire numerator under the square root?

$\displaystyle\int_2^4\frac{\sqrt{x^2-4}}{x^2}\,\mathrm dx$

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$x=2\sec t\implies\mathrm dx=2\sec t\tan t\,\mathrm dt$

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$\displaystyle\int_0^{\pi/3}\frac{\sqrt{(2\sec t)^2-4}}{(2\sec t)^2}(2\sec t\tan t)\,\mathrm dt=\int_0^{\pi/3}\frac{\tan^2t}{\sec t}\,\mathrm dt$

We can write

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3 years ago

How do I solve 16 = 5x - 9

Darya [45]

16=5x_9

16=_9+5
16 +_5x=_9+5x+_5x

16 + -5x=_9+0

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3 years ago

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