4 years ago

What is the coefficient in the expression 8x^2+1?

1 answer:

5 0

Answer:

The coefficient is 8, so D

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Naily [24]

The answer should be 12.2
7^2+10^2=c^2
49+100=c^2
149=c^2
12.2=c

6 0

3 years ago

Anika [276]

The ODE has characteristic equation

$r^2+6r+9=(r+3)^2=0$

with roots $r=-3$ , and hence the characteristic solution

$y_c=C_1e^{-3t}+C_2te^{-3t}$

For the particular solution, assume an ansatz of $y_p=ae^{-t}$ , with derivatives

$\dfrac{\mathrm dy_p}{\mathrm dt}=-ae^{-t}$

$\dfrac{\mathrm d^2y_p}{\mathrm dt^2}=ae^{-t}$

Substituting these into the ODE gives

$ae^{-t}-6ae^{-t}+9ae^{-t}=4ae^{-t}=4e^{-t}\implies a=1$

so that the particular solution is

$\boxed{y(t)=C_1e^{-3t}+C_2te^{-3t}+e^{-t}}$

7 0

3 years ago

adoni [48]

300,000 + 25,000 + 800 + 9

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4 years ago

malfutka [58]

Answer:

Step-by-step explanation:

The Answer is D

4 0

3 years ago

babymother [125]

If it goes through the origin of a graph

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3 years ago