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Zepler [3.9K]
3 years ago
5

Solve the given system of equations by either Gaussian elimination or Gauss-Jordan elimination. (If the system is inconsistent,

enter INCONSISTENT. If the system is dependent, express x, y, and z in terms of the parameter t.) 5x − 2y + 4z = 12 x + y + z = 8 4x − 3y + 3z = 4 (x, y, z) = 2(−3z+14) 7​, −z+28 7​,t
Mathematics
1 answer:
goldenfox [79]3 years ago
8 0

Answer:

Required unique solutions are 8, 4, 0 and the system is consistant.

Step-by-step explanation:

Given system of equation,

5x-2y+4z=12

x+y+z=8

4x-3y+3z=4

To find solution of the system re-write as,

\left[\begin{array}{ccc}5&-2&4 :12\\1&1&1 : 8\\4&-3&3 : 4\end{array}\right]\to\left[\begin{array}{ccc}1&1&1 :8\\5&-2&4 : 12\\4&-3&3 : 4\end{array}\right] (R_1\iff R_2)\\\implies \left[\begin{array}{ccc}1&1& 1:8\\0&-7&-1 : -28\\0&-7&-1 : -28\end{array}\right]        (R_{2}^{'}=R_2-5R_1,R_{3}^{'}=R_3-4R_1)\\\implies \left[\begin{array}{ccc}1&1&1 :8\\0&-7&-1 :-28\\0&0&0 : 0\end{array}\right]    (R_{3}^{'}=R_3+R_2)\\\implies \left[\begin{array}{ccc}1&1&1 :8\\0&1&1/7 : 4\\0&0&0 : 0\end{array}\right]

Hence solutions are 8, 4 and 0. And it is a unique solution. Therefore system is consistent.

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FIND GE (NEED ANSWER FAST!!!)
True [87]

Answer:

GE = 14

Step-by-step explanation:

3x + 5 = 6x - 4

x = 3

Plug it in.

3 (3) + 5 = 14 = GD

6 (3) - 4 = 14 = GF

With that information, you know all the blue lines are the same.

GE = 14

6 0
3 years ago
Which is greater 7.09 or 7.54
Dima020 [189]
7.54 is larger than 7.09
5 0
3 years ago
Read 2 more answers
In the parallelogram below, z = ?°
katrin [286]

Answer:

z is 111 degrees

Step-by-step explanation:

69 ° and z is a linear pair, therefore:

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7 0
3 years ago
Determine if the sequence converges or diverges 8, 108, 208, 308, 408
PSYCHO15rus [73]

Hello there. To solve this question, we'll have to remember some properties about convergence of sequences.

Given the following sequence:

\mleft\lbrace a_1,a_2,\ldots,a_n\mright\rbrace

If it is a finite sequence, then it converges to its last term, that is the lim sup (or greatest term of the sequence).

If it is infinite, then the sequence only converges if this limit exists and is equal to zero, that is:

\lim _{n\rightarrow\infty}a_n=0

With this, we'll be able to determine whether the following sequence is convergent or not:

S=\mleft\lbrace8,108,208,308,408\mright\rbrace

Since it is a finite sequence, we already know it converges.

The lim sup of this sequence is its largest term, in this case, 408, and we write:

\limsup S=408

If it was an infinite sequence, on the other hand, we would have to determine the general term a_n and see if the limit is equal to zero.

Notice that there is a pattern between the values: the difference between two consecutive numbers is equal to 100.

In other words, it is an arithmetic progression with ratio equal to 100.

This means that we can use the following formula:

a_n=a_1+(n-1)\cdot r

Where a_1 = 8 and r = 100, therefore:

\begin{gathered} a_n=8+(n-1)\cdot100 \\ a_n=8+100n-100 \\ a_n=100n-92 \end{gathered}

And taking the limit as it goes to infinity, we have that:

\lim _{n\to\infty}a_n=\lim _{n\to\infty}100n-92=\infty

That is, the limit is not zero (not even a real number), so the sequence would not converge.

5 0
2 years ago
Anyone please,Solve & explain
e-lub [12.9K]

The slope-intercept form is y = mx +b


You have:

4x +7y =14

First subtract 4x from each side:

7y = -4x +14

Divide each term by 7:

7y/7 = -4x/7 + 14/7

Simplify:

y = -4/7x +2


3 0
3 years ago
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