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3 years ago

Hey please help me answer this and explain your answer :) Will give brainlst.

Mathematics

1 answer:

djyliett [7]3 years ago

3 0

Answer:

B for banana

Step-by-step explanation:

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What is the definition of mathematics?

Andrew [12]

<span>the abstract science of number, quantity, and space.

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3 years ago

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The Redhorse Osaka Wheel, a ferris wheel in Japan, is an amazing 404 feet high. The London Eye, a ferris wheel in England, is 39

scZoUnD [109]

Answer:

443 feet

Step-by-step explanation:

If the London Eye is 39 feet taller than Redhorse Osaka, we can add 39 to the height of Redhorse Osaka (404). Doing so, we get 443 feet!

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3 years ago

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Given the system

masha68 [24]

Answer:

I guess this systems has 3 different solution

Step-by-step explanation:

(x,y,z) (32/15,-2/5,-11/15)

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4 years ago

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Find a particular solution to the differential equation y′′+2y′+y=2t2−t+3e−2t. y′′+2y′+y=2t2−t+3e−2t.

Jlenok [28]

$y''+2y'+y=2t^2-t+3e^{-2t}$

The characteristic equation is

$r^2+2r+1=(r+1)^2=0\implies r=-1$

so the characteristic solution is

$y_c=C_1e^{-t}+C_2te^{-t}$

For the particular solution, we can try looking for a solution of the form

$y_p=at^2+bt+c+de^{-2t}$
$\implies{y_p}'=2at+b-2de^{-2t}$
$\implies{y_p}''=2a+4de^{-2t}$

Substituting into the ODE, we have

$(2a+4de^{-2t})+2(2at+b-2de^{-2t})+(at^2+bt+c+de^{-2t})=2t^2-t+3e^{-2t}$
$at^2+(4a+b)t+(2a+2b+c)+de^{-2t}=2t^2-t+3e^{-2t}$
$\implies\begin{cases}a=2\\4a+b=-1\\2a+2b+c=0\\d=3\end{cases}\implies a=2,b=-9,c=14,d=3$

So the general solution to the ODE is

$y=y_c+y_p$
$y=C_1e^{-t}+C_2te^{-t}+2t^2-9t+14+3e^{-2t}$

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3 years ago

Plzz help with my test

Aleksandr [31]

Y = 4

when you look at the -3 at the x-axis, it meets 4 at the y-axis

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3 years ago