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stich3 [128]
3 years ago
15

Can you help me pleaseee

Mathematics
1 answer:
grigory [225]3 years ago
5 0
The answer would be ~$162~ because 12*6=72 and 30*3=90 so 72+90=162

Hope this helps

Have a great day/night

Feel free to ask any questions
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nalin [4]

Answer:

x = 10

Step-by-step explanation:

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2 years ago
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35% of f is 14. What is f
Scilla [17]

Answer: 40

Step-by-step explanation:

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What is the row echelon form of this matrix?
USPshnik [31]

The row echelon form of the matrix is presented as follows;

\begin{bmatrix}1 &-2  &-5  \\ 0& 1 &  -7\\ 0&0  &1  \\\end{bmatrix}

<h3>What is the row echelon form of a matrix?</h3>

The row echelon form of a matrix has the rows consisting entirely of zeros at the bottom, and the first entry of a row that is not entirely zero is a one.

The given matrix is presented as follows;

\begin{bmatrix}-3 &6  &15  \\ 2& -6 &  4\\ 1&0  &-1  \\\end{bmatrix}

The conditions of a matrix in the row echelon form are as follows;

  1. There are row having nonzero entries above the zero rows.
  2. The first nonzero entry in a nonzero row is a one.
  3. The location of the leading one in a nonzero row is to the left of the leading one in the next lower rows.

Dividing Row 1 by -3 gives:

\begin{bmatrix}1 &-2  &-5  \\ 2& -6 &  4\\ 1&0  &-1  \\\end{bmatrix}

Multiplying Row 1 by 2 and subtracting the result from Row 2 gives;

\begin{bmatrix}1 &-2  &-5  \\ 0& -2 &  14\\ 1&0  &-1  \\\end{bmatrix}

Subtracting Row 1 from Row 3 gives;

\begin{bmatrix}1 &-2  &-5  \\ 0& -2 &  14\\ 0&2  &4  \\\end{bmatrix}

Adding Row 2 to Row 3 gives;

\begin{bmatrix}1 &-2  &-5  \\ 0& -2 &  14\\ 0&0  &18  \\\end{bmatrix}

Dividing Row 2 by -2, and Row 3 by 18 gives;

\begin{bmatrix}1 &-2  &-5  \\ 0& 1 &  -7\\ 0&0  &1  \\\end{bmatrix}

The above matrix is in the row echelon form

Learn more about the row echelon form here:

brainly.com/question/14721322

#SPJ1

8 0
2 years ago
The weekly cost (c) of manufacturing (x) number of remotes is given by the equation below. what is the cost to manufacture 2500
IRISSAK [1]
C= 2000 + 3(2500)
C= 2000 + 7,500
C= $9,500
6 0
3 years ago
What is the anwser to this equation? 36=15+7x
deff fn [24]

Answer:

x = 3

Step-by-step explanation:

  1. Subtract 15 from each side, so it now looks like this: 21 = 7x
  2. Divide each side by 7 to cancel out the 7 next to x. It should now look like this: 3 = x

I hope this helps!

7 0
4 years ago
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