Consider the matrices. Help with 3 math questions.

Answer:

[tex] A-B = \begin {bmatrix} - 7 & 7 \\ - 10 & -2 \\ 10 & - 9 \end{bmatrix} \\[/tex]

[tex] PQ = \begin {bmatrix} -9 & -18\\ -27 & 0\\-45 & -36\\9 & 54 \end{bmatrix}\\[/tex]

Step-by-step explanation:

[tex] A= \begin {bmatrix} - 2 & 3\\ - 7 & 4\\9 & - 1 \end{bmatrix} \: and \: B \begin {bmatrix} 5 & - 4\\ 3 & 6\\-1 & - 8\end{bmatrix} \\\\

A-B = \begin {bmatrix} - 2 & 3\\ - 7 & 4\\9 & - 1 \end{bmatrix} - \begin {bmatrix} 5 & - 4\\ 3 & 6\\-1 & - 8\end{bmatrix} \\\\

A-B = \begin {bmatrix} - 2 - 5 & 3-(-4)\\ - 7-3 & 4-6 \\9-(-1) & - 1-8 \end{bmatrix} \\\\

A-B = \begin {bmatrix} - 2 - 5 & 3+4\\ - 7-3 & 4-6 \\9+1 & - 1-8 \end{bmatrix} \\\\

A-B = \begin {bmatrix} - 7 & 7 \\ - 10 & -2 \\ 10 & - 9 \end{bmatrix} \\\\[/tex]

[tex] P= \begin {bmatrix} 1 & 2\\ 3 & 0\\5 & 4\\-1 & - 6 \end{bmatrix} \: and \: Q= \begin {bmatrix} - 1\\ - 8\end{bmatrix} \\\\

PQ = \begin {bmatrix} 1 & 2\\ 3 & 0\\5 & 4\\-1 & - 6 \end{bmatrix} \begin {bmatrix} - 1\\ - 8\end{bmatrix} \\\\

PQ = \begin {bmatrix} 1(-1)+1(-8) & 2(-1)+2(-8)\\ 3(-1)+3(-8) & 0(-1)+0(-8)\\5(-1)+5(-8) & 4(-1)+4(-8)\\-1(-1)+(-1)(-8) & - 6(-1)+(-6)(-8) \end{bmatrix}\\\\

PQ = \begin {bmatrix} - 1-8 & - 2-16\\ - 3-24 & 0+0\\-5-40 & - 4-32\\1+8 & 6+48 \end{bmatrix}\\\\

PQ = \begin {bmatrix} -9 & -18\\ -27 & 0\\-45 & -36\\9 & 54 \end{bmatrix}\\\\[/tex]

[tex] S= \begin{bmatrix} 3 & 4\\-1 & - 2\end{bmatrix}\: and \: T =\begin{bmatrix} - 2& 0\\-4 & 5\end{bmatrix}\\\\

ST= \begin{bmatrix} 3 & 4\\-1 & - 2\end{bmatrix} \begin{bmatrix} - 2& 0\\-4 & 5\end{bmatrix}\\\\

ST= \begin{bmatrix} 3(-2)+4(-4) & 3(0)+4(5)\\-1 (-2)+(-2)(-4)& - 1(0)+(-2)5\end{bmatrix}\\\\

ST= \begin{bmatrix} -6-16 & 0+20\\2+8 & 0 - 10\end{bmatrix}\\\\

ST= \begin{bmatrix} -22 & 20\\10 & - 10\end{bmatrix}\\[/tex]

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116=58+r
help me pls im dumb and i need good college

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Vera is knitting a scarf. She knits 4.5 inches on Friday, 3.25 inches on Saturday, and 0.75 inch on Sunday. How many inches does she knit in all?
Drag a number into each box in the chart and find the total. Answer choices may be used more than once.
Ones
Tenths Hundredths
Friday
Saturday
3
Sunday
0
Total
O
.: 0
* 1
:: 2
:: 6
:: 9

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.



is greater than

a.





b.



c.





d. None of these​

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A. AAS Triangle Congruence Theorem
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A.
B.
C.
D.

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$400
$600
$700
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pls help its due today if it's correct I'll make you Brainliest!!!!​

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Kate wants to buy a TV that has a price of $450. Kate decides to start saving after
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