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Vladimir [108]
3 years ago
5

Difference of a number and -3 is 6. what is the number

Mathematics
1 answer:
tiny-mole [99]3 years ago
5 0
Let x = the number we are looking for:

Difference means that we subtract:

x-(-3)=6

Two negative signs turn it into one positive sign (a plus):

x+3=6

We need to get x by itself, so we subtract 3 from both sides:

x=3

So now we know that the number we were asked to find is 3.
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The yearbook staff receive 75 submissions for yearbook articles. Paul will accept 2/5
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Step-by-step explanation:

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3 years ago
Construct an augmented matrix for this linear system: x − y − 4z = 5 2x 2z = 0 4x y z = 3.
Crazy boy [7]

The augmented matrix is,

\left(\begin{array}{ccccc}1&-1&-4&|&5\\2&0&2&|&0\\4&1&1&|&3\end{array}\right)

We have given system of linear equation is,

x - y - 4z = 5,2x + 2z = 0 ,4x +y +z = 3.

<h3>What is the meaning of augmented matrix?</h3>

In an augmented matrix, each row represents one equation in the system and each column represents coefficients (with signs) of variables or the constant terms.

So, the first row is

1\ -1\ -4\ 5

the second row is

2\ 0\ 2\ 0

and the third row is

4\ 1\ 1\ 3

Therefore the augmented matrix for this linear system is,

\left(\begin{array}{ccccc}1&-1&-4&|&5\\2&0&2&|&0\\4&1&1&|&3\end{array}\right)

To learn more about the augmented matrix visit:

brainly.com/question/14600951

7 0
2 years ago
Read 2 more answers
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