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Gelneren [198K]
3 years ago
10

3k - 2r k = 9 r = 6 show work

Mathematics
2 answers:
Marianna [84]3 years ago
5 0

Answer:

15

Step-by-step explanation:

3 x 9= 27

2 x 6= 12

27-12=15

aniked [119]3 years ago
3 0
The answer would be 15.
you do 3*9=27, then 2*6=12 lastly you do 27-12=15.
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GuDViN [60]
<h3>Answer:</h3>

(x, y) = (7, -5)

<h3>Step-by-step explanation:</h3>

It generally works well to follow directions.

The matrix of coefficients is ...

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

Its inverse is the transpose of the cofactor matrix, divided by the determinant. That is ...

\dfrac{1}{26}\left[\begin{array}{ccc}3&-4\\5&2\end{array}\right]

So the solution is the product of this and the vector of constants [-6, -50]. That product is ...

... x = (3·(-6) +(-4)(-50))/26 = 7

... y = (5·(-6) +2·(-50))/26 = -5

The solution using inverse matrices is ...

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7 0
2 years ago
Find the value of x. 3) 2x (x + 21)​
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2 years ago
Triangle ABC is rotated to create the image A'B'C
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Is there more to this?


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