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Yanka [14]
2 years ago
7

6m+7n+5m−3n simpified

Mathematics
1 answer:
diamong [38]2 years ago
6 0

Answer:

11m + 4n

Step-by-step explanation:

when two numbers with the same variable are added together or subtracted the result is just the numbers added or subtracted. So you can add 6m and 5m to get 11m. and you can subtract 3n from 7n to get 4n

11m + 4n

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The discount price of a hat is $18. What is the regular price?
Mumz [18]

Without that value, we can't solve your problem, unless you are looking for an algebraic equation.

6 0
2 years ago
[10] In the following given system, determine a matrix A and vector b so that the system can be represented as a matrix equation
irina1246 [14]

Answer:

y=-\frac{158}{579}

Step-by-step explanation:

To find the matrix A, took all the numeric coefficient of the variables, the first column is for x, the second column for y, the third column for z and the last column for w:

A=\left[\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right]

And the vector B is formed with the solution of each equation of the system:b=\left[\begin{array}{c}3\\-3\\6\\1\end{array}\right]

To apply the Cramer's rule, take the matrix A and replace the column assigned to the variable that you need to solve with the vector b, in this case, that would be the second column. This new matrix is going to be called A_{2}.

A_{2}=\left[\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right]

The value of y using Cramer's rule is:

y=\frac{det(A_{2}) }{det(A)}

Find the value of the determinant of each matrix, and divide:

y==\frac{\left|\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right|}{\left|\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right|} =\frac{158}{-579}

y=-\frac{158}{579}

7 0
3 years ago
What equations show you how to find 16-9
kirill [66]
You can do:

16 - 10 and then + 1 (thats 7)

9+ ? is 16 ? ( 7)
7 0
3 years ago
Read 2 more answers
Could anybody help with this question? My teacher didn’t give a review so I’m not sure what to do. Any help is appreciated!
Allisa [31]

Answer: 6

Step-by-step explanation: set the equations equal to each other then solve. plug that number into the equation for AB

8 0
3 years ago
help me plz i do not understand and plz DO NOT TAKE MY POINTS BECAUSE I WILL REPORT YOU!!! thank you and you can anser or explan
balu736 [363]
It’s y=x+15 because every x column adds 15 to get y
5 0
3 years ago
Read 2 more answers
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