3 years ago

Please help

2 answers:

4 0

The other one will be 66 degrees because what you do is you see it is a 90 degree angle so then you subtract 24 from 90 and get 66

Law Incorporation [45]3 years ago

3 0

Step-by-step explanation:

Angle = x

Supplement = 5x - 24

Given:

x + 5x - 24 = 180⁰

6x = 204

x = 34⁰

Supplement = 180 - 34 = 146⁰

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3 0

3 years ago

Can somebody explain this to me when 2du = 16xdx ???

tamaranim1 [39]

When you set $u=4x^2+4$ , you end up with the differentials $\mathrm du=8x\,\mathrm dx$ . Multiplying both sides by 2 gives $2\,\mathrm du=16x\,\mathrm dx$ .

Then the integral is

$\displaystyle\int_0^1\frac{16x}{(4x^2+4)^2}\,\mathrm dx=\int_4^8\frac2{u^2}\,\mathrm du=-\frac2u\bigg|_{u=4}^{u=8}=-2\left(\frac18-\frac14\right)=\frac14$