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Maslowich
3 years ago
10

Hi, can someone help with this 8th grade math question?

Mathematics
1 answer:
Norma-Jean [14]3 years ago
3 0
They multiplied 3 by itself 4 times, so it’s 3^4
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If one class collected 65 cans for the food drive and another class collected 176 cans, how many cans did the two classes collec
kotegsom [21]
In this equation C means the total. In order to find the total you must add the two class together to get the total. The equation that represents this would be the fourth one. 65 + 176 = C
7 0
3 years ago
Read 2 more answers
Differential Equations - Reduction of order
iren [92.7K]
With reduction of order, we assume a solution of the form y_2=zy_1=ze^{2x}, with z=z(x). Then

{y_2}'=(z'+2z)e^{2x}
{y_2}''=(z''+4z'+4z)e^{2x}

and substituting into the ODE gives

x(z''+4z'+4z)e^{2x}-(2x+1)(z'+2z)e^{2x}+2ze^{2x}=0
x(z''+4z'+4z)-(2x+1)(z'+2z)+2z=0
xz''+(2x-1)z'=0

Let \xi(x)=z'(x), so that \xi'=z''. This gives the linear ODE

x\xi'+(2x-1)\xi=0

This equation is also separable, so you can write

\dfrac{\xi'}{\xi}=\dfrac{1-2x}x

Integrating both sides with respect to x gives

\ln|\xi|=-2x+\ln x+C_1
\xi=C_1xe^{-2x}

Next, solve z'=\xi for z by integrating both sides again with respect to x.

z'=\xi
\implies z=\displaystyle\int C_1xe^{-2x}\,\mathrm dx
\implies z=C_1e^{-2x}(2x+1)+C_2

And finally, solve for y_2.

y_2=zy_1=C_1(2x+1)+C_2e^{2x}

and note that y_1 is already taken into account as part of y_2, so this is the general solution to the ODE.
6 0
3 years ago
Help me with this please .
Vladimir [108]

Answer:

2.09<2.1

Step-by-step explanation:

2.09   < 2.1

Take one number and subtract the other.

If you get a positive, then the first number is larger.  If you get a negative,  then the second number is larger.


I think 2.1 is larger

2.1

-2.09

-------------

Borrow from the 1

2. 0  10

-2. 0 9

---------------

0.  0 1

Since this is positive, 2.1 is larger

8 0
3 years ago
8. Find the area of each figure to the nearest tenth.<br><br> Please Help!
Cloud [144]
Hopefully this helps

is it ten or tenth?

If it's ten,

88 = 90
18550 = 18550

Tenth

18550 = 18550.0
88=88.0

3 0
3 years ago
5+5=−10<br><br><br> 1.p=1<br><br> 2.p=3<br><br> 3.p= -3<br><br> 4.p= -1
Black_prince [1.1K]
The answer is 1

thank me later
6 0
3 years ago
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