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3 years ago

Solve using matrix inverse method 3x 2y 3x-2y+3z=8 , 2x+ y - z = 1, 4x-3y + 2z =4

Mathematics

1 answer:

emmainna [20.7K]3 years ago

7 0

Step-by-step explanation:

A=⎣⎢⎢⎡324−21−33−12⎦⎥⎥⎤,x=⎣⎢⎢⎡xyz⎦⎥⎥⎤,B=⎣⎢⎢⎡814⎦⎥⎥⎤

∣A∣=⎣⎢⎢⎡324−21−33−12⎦⎥⎥⎤

=3[1−3−12]−1(−2)[24−12]+3[241−3]⇒3(2−3)−2(4+4)+

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If the length of rectangle is x + 4 and the width is 3x - 5 what is the perimeter?

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Answer:

8x-2

Step-by-step explanation:

l = x+4

w = 3x-5

The perimeter is

P =2(l+w)

= 2(x+4+3x-5)

Combine like terms

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Distribute

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3 years ago

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3 years ago

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natima [27]

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<h3>Equation for speed</h3>

Speed is the ratio of total distance travelled to total time taken. It is given by:

Speed = distance / time

Let a represent Karen speed and b represent Melinda speed, hence:

a = b + 10

a - b = 10 (1)

Also:

a = d₁ / 1

d₁ = a

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2 years ago

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Answer:

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Step-by-step explanation:

1) To solve for d, isolate it in the equation. So, to get rid of the $-\frac{1}{2}$ with the d, add $\frac{1}{2}$ to both sides.

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Thus, d = $\frac{11}{12}$ .

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3 years ago

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Answer:

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Step-by-step explanation:

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