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2 years ago

Matrix A has 2 rows and 3 columns whereas matrix B has3 rows and 2 column

Mathematics

1 answer:

sergeinik [125]2 years ago

8 0

Step-by-step explanation:

for any matrix multiplication number of columns of first matrix should be equal to number of rows of second matrix.

For AB

A has 3 columns and B has 3 rows so it matches . Hence can be multiplied.

For BA

B has 2 columns and A has 2 rows it also matches so can be multiplied

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State the line of reflection. A B 2 C D'o Chri А" B Reflection across (type with no spaces) Espacio en Blanco 1:

zubka84 [21]

Answer:

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Step-by-step explanation:

The image is reflected across the y-axis

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2 years ago

The height h of a cylinder is 3 units lees than 4 times its radius r. Which expression represents the height of the cylinder in

frez [133]

Well it's 4 time the radius, so 4r
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3 years ago

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Scrat [10]

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3 years ago

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What is the answer? (Please help)

k0ka [10]

$\dfrac{bc}{b}=\dfrac{b}{b}\cdot\dfrac{1}{c}=1\cdot\dfrac{1}{c}=\boxed{\dfrac{1}{c}}\\\\\dfrac{\not b^1}{\not b_1c}=\dfrac{1}{1c}=\boxed{\dfrac{1}{c}}$

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3 years ago

Solve the system of equations by any method. 5x+9y =16 x+2y =4

Alisiya [41]

Answer:

The system of equations has one solution at (-4, 4).

Step-by-step explanation:

We are given the system of equations:

$\displaystyle\left \{ {{5x+9y=16} \atop {x+2y=4}} \right.$

We can use elimination to solve this system. We need to multiply the second equation by -5 so we can cancel out our x-terms.

$-5\times(x+2y=4) \rightarrow -5x - 10y = -20$

Therefore, our system now becomes:

$\displaystyle\left \{ {{5x+9y=16} \atop {-5x-10y=-20}} \right.$

Now, we can add these two equations together and solve for y.

$\displaystyle(5x + 9y) + (-5x - 10y) = 0 - y\\\\16 + (-20) = -4\\\\-y = -4\\\\\frac{-y}{-1}=\frac{-4}{-1}\\\\y = 4$

Now, we can substitute our value for y into one of the equations and solve for x.

$x+2(4)=4\\\\x + 8 = 4\\\\x = -4$

Therefore, our final solution is (-4, 4).

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3 years ago