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amm1812
3 years ago
14

Will you like an answer to your question saying what grade is it. There is a girl on brainly she is posting wrong answers her pr

ofile name is 402557 go and report her
Advanced Placement (AP)
1 answer:
Novay_Z [31]3 years ago
7 0
Aight bet ima report mark my answer as brainliest
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How are the structure and functioning of state legislatures similar to the United States Congress?
ivolga24 [154]
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Essy about climate change 300 to 500 words<br>help me guys<br>#reportnonsense​
Sergio039 [100]

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Climate change in the world can be caused by various activities. When climate change occurs; temperatures can increase a dramatically. When temperature rises, many different changes can occur on Earth. For example, it can result in more floods, droughts, or intense rain, as well as more frequent and severe heat waves. Oceans and glaciers have also experienced some changes: oceans are warming and becoming more acidic, glaciers are melting, and sea levels are rising. As these changes frequently occur in future decades, they will likely present challenges to our society and environment.

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3 0
2 years ago
Core-periphery models are generally based on the idea that:
marusya05 [52]

So the answer is 2 / of a 3 thrights

Explanation:

3 0
2 years ago
I need help with 29 through 32
aleksklad [387]

Answer:

the awnser to 29 is  and 30  31  and 32 get a life *Flight Dolphin Laughs*

Explanation:

Need them brainly points   lol

5 0
3 years ago
2. Find the solution of each differential equation. (a) y/2y-8y = 0 (b) 25y/- 20y + 4y = 0 (c) y + 2y + 2y = 0 2. Find the solut
jek_recluse [69]

Each of these ODEs is linear and homogeneous with constant coefficients, so we only need to find the roots to their respective characteristic equations.

(a) The characteristic equation for

y'' - 2y' - 8y = 0

is

r^2 - 2r - 8 = (r - 4) (r + 2) = 0

which arises from the ansatz y = e^{rx}.

The characteristic roots are r=4 and r=-2. Then the general solution is

\boxed{y = C_1 e^{4x} + C_2 e^{-2x}}

where C_1,C_2 are arbitrary constants.

(b) The characteristic equation here is

25r^2 - 20r + 4 = (5r - 2)^2 = 0

with a root at r=\frac25 of multiplicity 2. Then the general solution is

\boxed{y = C_1 e^{2/5\,x} + C_2 x e^{2/5\,x}}

(c) The characteristic equation is

r^2 + 2r + 2 = (r + 1)^2 + 1 = 0

with roots at r = -1 \pm i, where i=\sqrt{-1}. Then the general solution is

y = C_1 e^{(-1+i)x} + C_2 e^{(-1-i)x}

Recall Euler's identity,

e^{ix} = \cos(x) + i \sin(x)

Then we can rewrite the solution as

y = C_1 e^{-x} (\cos(x) + i \sin(x)) + C_2 e^{-x} (\cos(x) - i \sin(x))

or even more simply as

\boxed{y = C_1 e^{-x} \cos(x) + C_2 e^{-x} \sin(x)}

3 0
1 year ago
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