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Vesna [10]
3 years ago
9

Question 33 with explanation please! 15 points

Mathematics
2 answers:
Dominik [7]3 years ago
7 0
1. do you realize you have Paul at the bottom of the paper, 2. Well, Its Paul, because it says “all the girls only have 1 pet and 1 brother or sibling,”
FrozenT [24]3 years ago
3 0
Well Jessica’s brothers is (Paul) because lakisha has a bulldog and Angela’s brothers are men and Stephan’ and all girls can have one pet and one brother,This means Angela and lakisha are sisters.
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Finn imagines 1 more row of nines to find the total area of 9 * 9 rectangle. explain how this could help him solve 9 * 9
Juliette [100K]
Im confused by the question. 

but i would say imagining nine rows of nine 

the area would be 81.

Hope this helps :)
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3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Crm%20%5Cint_%7B0%7D%5E%7B%20%20%5Cpi%20%7D%20%5Ccos%28%20%5Ccot%28x%29%20%20%20%20-%20%2
Nikolay [14]

Replace x with π/2 - x to get the equivalent integral

\displaystyle \int_{-\frac\pi2}^{\frac\pi2} \cos(\cot(x) - \tan(x)) \, dx

but the integrand is even, so this is really just

\displaystyle 2 \int_0^{\frac\pi2} \cos(\cot(x) - \tan(x)) \, dx

Substitute x = 1/2 arccot(u/2), which transforms the integral to

\displaystyle 2 \int_{-\infty}^\infty \frac{\cos(u)}{u^2+4} \, du

There are lots of ways to compute this. What I did was to consider the complex contour integral

\displaystyle \int_\gamma \frac{e^{iz}}{z^2+4} \, dz

where γ is a semicircle in the complex plane with its diameter joining (-R, 0) and (R, 0) on the real axis. A bound for the integral over the arc of the circle is estimated to be

\displaystyle \left|\int_{z=Re^{i0}}^{z=Re^{i\pi}} f(z) \, dz\right| \le \frac{\pi R}{|R^2-4|}

which vanishes as R goes to ∞. Then by the residue theorem, we have in the limit

\displaystyle \int_{-\infty}^\infty \frac{\cos(x)}{x^2+4} \, dx = 2\pi i {} \mathrm{Res}\left(\frac{e^{iz}}{z^2+4},z=2i\right) = \frac\pi{2e^2}

and it follows that

\displaystyle \int_0^\pi \cos(\cot(x)-\tan(x)) \, dx = \boxed{\frac\pi{e^2}}

7 0
1 year ago
Use the chart to multiply the binomial by the trinomial,<br> (ay: 3)( *y* 416)
Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

1,248

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3 years ago
Find the percent increase. Round to the nearest percent
Dmitrij [34]
The percent increase is 18.18 repeating
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2 years ago
Please help me with these two :/
serg [7]
The first answer is 80, and the second answer is still 65.5. Hope this helps!
3 0
2 years ago
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