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tensa zangetsu [6.8K]
4 years ago
5

Please help!!!!!!!!!

Mathematics
2 answers:
photoshop1234 [79]4 years ago
8 0
8.96/.12 is your answer
dem82 [27]4 years ago
4 0

Answer:

She bought 8 books

Step-by-step explanation:

8.96/1.12

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Not sure how I am supposed to arrive to an answer
ANEK [815]

Integrating both sides once gives

\dfrac{\mathrm d\mathbf r}{\mathrm dt}=2e^t\,\mathbf i+3e^{-t}\,\mathbf j+4e^{2t}\,\mathbf k+\mathbf c

where \mathbf c is an arbitrary constant vector. Use the initial condition to find its value:

\dfrac{\mathrm d\mathbf r}{\mathrm dt}(0)=-\mathbf i+7\,\mathbf j=(2+c_1)\,\mathbf i+(3+c_2)\,\mathbf j+(4+c_3)\,\mathbf k

\implies\mathbf c_1=-3\,\mathbf i+4\,\mathbf j-4\,\mathbf k

Integrate again:

\mathbf r(t)=2e^t\,\mathbf i-3e^{-t}\,\mathbf j+2e^{2t}\,\mathbf k+\mathbf c_1t+\mathbf c_2

where \mathbf c_2 is another arbitrary vector of constants. Use the other initial condition to determine its components:

\mathbf r(0)=6\,\mathbf i+\mathbf j+3\,\mathbf k=(2+c_1)\,\mathbf i+(-3+c_2)\,\mathbf j+(2+c_3)\,\mathbf k

\implies\mathbf c_2=4\,\mathbf i+4\,\mathbf j+\mathbf k

Then the particular solution to this ODE is

\boxed{\mathbf r(t)=(2e^t-3t+4)\,\mathbf i+(-3e^{-t}+4t+4)\,\mathbf j+(2e^{2t}-4t+1)\,\mathbf k}

5 0
4 years ago
What can be concluded about the line represented in the table? Check all that apply.
alisha [4.7K]

Answer: the second one, the third one, and the fifth

Step-by-step explanation:

I am almost certain that is correct, but don't quote me on it

6 0
3 years ago
Read 2 more answers
What is the product of....<br><br> (0.061)•(0.43)=
dem82 [27]
The product is 0.02623
6 0
3 years ago
Please help best answer gets brainliest
timama [110]

Gavin and his 3 friends total 4 people. If they are to share equally in the 1/3 pound of cake, they must

... divide 1/3 by 4, or multiply 1/3 by 1/4. Therefore each friend gets 1/12 of cake.

7 0
3 years ago
What is 45 over 2 in decimals ?
Kobotan [32]

Answer:

22.5

Step-by-step explanation:

I know because I just got it right on a test.....

5 0
3 years ago
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