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saw5 [17]
3 years ago
7

Given the following matrices, find 3A - 2B. (Hint: find 3A and 2B first and then subtract.)

Mathematics
1 answer:
Rzqust [24]3 years ago
7 0
Its A
When you multiply a constant k to a matrix, you multiply all the corresponding numbers in the matrix by k.
So 3A would be = 3 9 15 6 and 2b would be = 8 18 0 6 Now subtract it. to get your answer
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Answer:

D (3/2

Step-by-step explanation:

<u>Simplify both side of the equation</u>: 5(4x - 10) + 10x = 4(2x - 3) + 2(x - 4)

(5)(4x) + (5)(−10) + 10x = (4)(2x) + (4)(−3) + (2)(x) + (2)(−4)

Then you distribute: 20x + −50 + 10x = 8x + −12 + 2x + −8

(20x + 10x) + (−50) = (8x + 2x) + (−12 + −8)

Combine like terms: 30x + −50 = 10x + −20

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<u>Subtract 10x from both sides</u>: 30x − 50 − 10x = 10x − 20 − 10x

20x - 50 = -20

<u>Add 50 to both sides</u>: 20x - 50 + 50 = -20 + 50

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<u>Divide both sides by 20</u>: 20x / 20 = 30 / 20

<em>x = 3/2</em>

<em />

Boom! I hope that helped :)

5 0
3 years ago
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DIA [1.3K]

Answer:

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Step-by-step explanation:

We have, 10% × x = 20

or,  

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× x = 20

Multiplying both sides by 100 and dividing both sides by 10,

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If you are using a calculator, simply enter 20×100÷10, which will give you the answer.

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Remember multiply or dividing by a negative reverses the value of the quality being divided or multiplied.

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Step-by-step explanation:

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Nat2105 [25]

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Step-by-step explanation:

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