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Pachacha [2.7K]
3 years ago
10

-50 POINTS- please help

Mathematics
2 answers:
e-lub [12.9K]3 years ago
7 0

Answer:

-13

-10

Step-by-step explanation:

A x = B

To find X

A ^ -1 A  x = A ^ -1 B

x = A^ -1 B

x = -3/2  -5/2      2

     -1       -2         4

Across times down

-3/2 * 2 + -5/2 *4 = -13

-1 *2 -2 * 4 = -10

The matrix is

-13

-10

Pani-rosa [81]3 years ago
4 0

Answer:

\Large \boxed{\bold{D.} \ \left[\begin{array}{ccc}-13\\ -10\end{array}\right]}

Step-by-step explanation:

AX=B

To find X

X=A^{-1} \cdot B

\displaystyle \left[\begin{array}{ccc}-\frac{3}{2} \cdot 2 + - \frac{5}{2} \cdot 4\\ -1 \cdot 2 + -2 \cdot 4\end{array}\right]

\displaystyle \left[\begin{array}{ccc}-3 + - 10\\ -2 + -8\end{array}\right]

\displaystyle \left[\begin{array}{ccc}-13\\ -10\end{array}\right]

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the correct answer is -3.125

Step-by-step explanation:

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Veronika [31]

Answer: All real numbers are solutions.

Step-by-step explanation:

<u>Let's solve your equation step-by-step.</u>

−(5x+6)−x=−6−6x

<u>Step 1: Simplify both sides of the equation.</u>

−(5x+6)−x=−6−6x

−5x+−6+−x=−6+−6x(Distribute)

(−5x+−x)+(−6)=−6x−6(Combine Like Terms)

−6x+−6=−6x−6

−6x−6=−6x−6

<u>Step 2: Add 6x to both sides.</u>

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<u>Step 3: Add 6 to both sides.</u>

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8 0
3 years ago
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Answer:

37 - 56 lb / ft3

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Step-by-step explanation:

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8 0
3 years ago
Find an equation of the plane. the plane through the point (−5, 9, 10) and perpendicular to the line x = 1 + t, y = 4t, z = 2 −
PtichkaEL [24]
The direction vector of the line
L: x=1+t, y=4t, z=2-3t
is <1,4,-3>
which is also the required normal vector of the plane.

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3 0
3 years ago
7x−4≥−15+2x solve in interval notation
Leviafan [203]

Answer:

[-11/5,∞)

Step-by-step explanation:

1. Add 4 to both sides: 7x-4+4≥-15+2x+4

2. Simplify: 7x≥2x-11

3. Subtract 2x from both sides: 7x-2x≥2x-11-2x

4. Simplify: 5x≥-11

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7 0
3 years ago
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