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4 years ago

Help me please

Mathematics

1 answer:

GrogVix [38]4 years ago

3 0

Answer:

What is the question?

Step-by-step explanation:

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Help solve this matrix problem for -4a+2b=

dlinn [17]

Step-by-step explanation:

$A = \begin{bmatrix} - 3 & 1\\ - 6 & 9\end{bmatrix} \: and \: B = \begin{bmatrix} - 4 & - 3 \\ - 9 & 9\end{bmatrix} \\\\-4A+2B = - 4\begin{bmatrix} - 3 & 1\\ - 6 & 9\end{bmatrix} + 2\begin{bmatrix} - 4 & - 3 \\ - 9 & 9\end{bmatrix} \\\\-4A+2B = \begin{bmatrix} - 3(-4) & 1(-4)\\ - 6(-4)& 9(-4)\end{bmatrix} + \begin{bmatrix} - 4(2) & - 3(2) \\ - 9(2) & 9(2)\end{bmatrix} \\\\-4A+2B = \begin{bmatrix}12 & -4\\ 24& -36\end{bmatrix} + \begin{bmatrix} - 8 & - 6 \\ - 18 & 18 \end{bmatrix} \\\\-4A+2B = \begin{bmatrix}12+(-8) & -4+(-6)\\ 24+(-18)& -36+18\end{bmatrix} \\\\-4A+2B = \begin{bmatrix}12-8 & -4-6\\ 24-18 & -36+18\end{bmatrix} \\\\\huge\red{-4A+2B }= \orange {\begin{bmatrix}4 & -10\\ 6 & -18\end{bmatrix}} \\$

6 0

3 years ago

Can someone please answer this, I’ll give you brainliest and your getting 50 points!

Crank

Answer:

answer is below

Step-by-step explanation:

A) The function that can be used to get the total

profit is; f(x) = 18x - 900

4 0

3 years ago

I need your helpppppppppp

svp [43]

1) 10, 20, 30, 35, 40, 41, 42 Her total value of Zoe's coins is 42 cents.

2) 25, 35, 45, 50, 55 His total value of Marc's coins is 55 cents.

5 0

3 years ago

Which ordered pair is the solution of the system of equations? 3x+2y=4, -2+2y=24, I need help Im very confused on how to solve t

Juliette [100K]

Answer:

x = -7.33 OR x = $\frac{-22}{3}$

y = 13

Step-by-step explanation:

<u>→You can use the substitution method. First, make y by itself in (-2 + 2y = 24):</u>

-2 + 2y = 24

2y = 26

y = 13

<u>→Then, plug in 13 for y into the other equation:</u>

3x + 2y = 4

3x + 2(13) = 4

3x + 26 = 4

3x = -22

x = -7.33 OR x = $\frac{-22}{3}$

5 0

3 years ago

What divided by 1/3 equals 6/7

ExtremeBDS [4]

Answer:

7/18

Step-by-step explanation:

6 0

3 years ago

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