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Marianna [84]
3 years ago
13

I’ll give brainlest!!!!! Pleaseeeeee!!!!!!

Mathematics
1 answer:
Masja [62]3 years ago
7 0

Answer:

38ft

Step-by-step explanation:

wellcut it in two a rectangle 8 by 3

triangle with the base of 7 and the hight of 4

area for a rectangle bxh so 8 times 3 = 24ft

area for a triangle is bxhx1/2 so 7x4= 28 divided by 2= 14

now add 14+24= 38ft

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2/3 × n= -22 what is n?
tekilochka [14]

n would equal <em>-33</em>.

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Factor completely.
antiseptic1488 [7]

Answer:

B

Step-by-step explanation:

Given

y² - 12y + 32

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The factors are - 4 and - 8, since

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You want to place a towel bar that is 10 1⁄4 inches long in the center of a door that is 26 1⁄3 inches wide. How far should you
mestny [16]
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Perform the indicated row operations, then write the new matrix.
Studentka2010 [4]

The matrix is not properly formatted.

However, I'm able to rearrange the question as:

\left[\begin{array}{ccc}1&1&1|-1\\-2&3&5|3\\3&2&4|1\end{array}\right]

Operations:

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-3R_1 +R_3 ->R_3

Please note that the above may not reflect the original question. However, you should be able to implement my steps in your question.

Answer:

\left[\begin{array}{ccc}1&1&1|-1\\0&5&7|1\\0&-1&1|4\end{array}\right]

Step-by-step explanation:

The first operation:

2R_1 + R_2 ->R_2

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\left[\begin{array}{ccc}1&1&1|-1\end{array}\right]

Multiply by 2

2 * \left[\begin{array}{ccc}1&1&1|-1\end{array}\right] = \left[\begin{array}{ccc}2&2&2|-2\end{array}\right]

Add to row 2 elements are: \left[\begin{array}{ccc}-2&3&5|3\end{array}\right]

\left[\begin{array}{ccc}2&2&2|-2\end{array}\right] + \left[\begin{array}{ccc}-2&3&5|3\end{array}\right]

\left[\begin{array}{ccc}0&5&7|1\end{array}\right]

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This means that the new third row (R3) is derived by:

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The row 1 elements are:

\left[\begin{array}{ccc}1&1&1|-1\end{array}\right]

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\left[\begin{array}{ccc}0&-1&1|4\end{array}\right]

Hence, the new matrix is:

\left[\begin{array}{ccc}1&1&1|-1\\0&5&7|1\\0&-1&1|4\end{array}\right]

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