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Alla [95]
3 years ago
8

What is 7 times 7 over 1 equal

Mathematics
2 answers:
Alex17521 [72]3 years ago
7 0

Answer:

49

Step-by-step explanation:

7*7/1=49 This is because 7/1 equals 7 since 1 goes into 7, 7 times so really the equation 7*7 which still equals 49.

Sloan [31]3 years ago
4 0
49. Because 7 times 7 is 49 and anything divided by 1 is it self. In this case, 49 is being divided by 1 so it equals itself. The answer is 49
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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
1 year ago
a recipe requires 1/4 pound of potatoes to make 3 servings of soup Don has one and a half pound of potatoes how many servings ca
tamaranim1 [39]
18 servings of soup he can make with the potatoes!
8 0
3 years ago
I need help with this question!!!
CaHeK987 [17]

K is equal to 2.

You have to move the 4 to the other side and change the addition sign to subtraction. After that, you have to subtract 8 and 4 which will give you 4 and 4 divided by 2 is 2 which means that k equals 2.

3 0
3 years ago
Read 2 more answers
The sum of 4 and y divided by 5 equal to 9. Find the value of y.​
Sophie [7]

Answer:

y = 41

Step-by-step explanation:

When you add 41 and 4, you would get 45.

When you divide by 5, it will be equal to 9:

45 ÷ 5 = 9

---------------------------------------------------------------------------------------------------------------

Have a great summer :)

6 0
2 years ago
Find the value of sin’60°+2tan45°-cos30°​
Anton [14]

Answer:

The answer is 2

Step-by-step explanation:

sin60°+ 2 tan45° - cos30°

sin60° = √3/2

2 tan45° = 1

cos30° = √3/2

sin60°+ 2 tan45° - cos30°

√3/2 + 2(1) - √3/2

√3/2 - √3/2 + 2(1)

0 + 2 = 2

Thus, The answer is 2

<u>-TheUnknownScientist</u>

8 0
3 years ago
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