2 years ago

PLEASE HELP LOOK AT THE PHOTO

Mathematics

1 answer:

Iteru [2.4K]2 years ago

6 0

Answer:

15: 20 = ???

16: 40 = W

17: 560 = B

18: 32 = C

19: 18 = S

20: 22 = L

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What is the ratio of a nickel to one dollar? reduce to simplest form

makkiz [27]

1:0.05

I think this is the answer

3 0

2 years ago

K = [ 14 -13 0 3 8 -1 -10 -2 5 ] find the determinant of K

spin [16.1K]

I suppose <em>K</em> is the matrix

$K = \begin{bmatrix}14 & -13 & 0 \\ 3 & 8 & -1 \\ -10 & -2 & 5\end{bmatrix}$

To compute det(<em>K</em>), you can use a simple cofactor expansion along the first row:

$\det(K) = 14\times\det\begin{bmatrix}8 & -1 \\-2 & 5\end{bmatrix} - (-13)\times\det\begin{bmatrix}3 & -1 \\ -10 & 5\end{bmatrix} + 0\times\det\begin{bmatrix}3 & 8 \\ -10 & -2\end{bmatrix} \\\\ \det(K) = 14\times(8\times5-(-1)\times(-2)) + 13\times(3\times5-(-1)\times(-10)) + 0 \\\\ \det(K) = 14\times38 + 13\times5 = \boxed{597}$