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podryga [215]
3 years ago
9

Solve the system ⎧⎩⎨⎪⎪⎪⎪⎪⎪4x1−x13x1−3x1−5x2+x2−4x2+3x2+4x3+2x3+6x3+6x3+4x4=+3x4=+7x4=+9x4=3143

Mathematics
1 answer:
ad-work [718]3 years ago
7 0

It appears you have the system with augmented matrxi ...

\left[\begin{array}{cccc|c}4&-5&4&4&3\\-1&1&2&3&1\\3&-4&6&7&4\\-3&3&6&9&3\end{array}\right]

Right away, you notice that the 4th row is 3 times the 2nd row, so the equations are dependent and will not have a unique solution.

My calculator tells me the reduced equations can be written

... x1 -14x3 -19x4 = -8

... x2 -12x3 -16x4 = -7

This says there are two dependent equations in the set, not just one.

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Brainlist for correct answer =]
Vesnalui [34]

Answer:

4

Step-by-step explanation:

The mode is the number that appears the most!!!!

Now lets solve :)

2, 2, 3, 3, 4, 4, 4, 4,

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5 0
2 years ago
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A bicycle tire has a diameter of 62 \text{ cm}62 cm62, start text, space, c, m, end text. What is the distance the bicycle tire
navik [9.2K]

Answer:

The distance bicycle tire travels is <u>1946.8 cm</u>.

Step-by-step explanation:

Given:

Diameter of bicycle tire = 62 cm.

The bicycle tire travels in 10 revolutions.

Now, to find the distance the bicycle tire travels in 10 revolutions.

Diameter = 62 cm.

Radius (r) = \frac{Diameter}{2}=\frac{62}{2}=31\ cm.

So, we get the circumference first by putting formula:

Circumference =2\pi r

Circumference =2\times 3.14\times 31\\\\Circumference =194.68\ cm.

Thus, we get the <u><em>circumference of tire 194.68 cm.</em></u>

<u><em>Number of revolutions the tire travels = 10.</em></u>

Now, to get the distance the bicycle tire travels we multiply circumference of tire by number of revolutions the tire travels:

194.68\ cm\times 10\\\\=1946.8\ cm.

Therefore, the distance bicycle tire travels is 1946.8 cm.

4 0
3 years ago
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How many sides does a square pyramid have
slamgirl [31]
A square pyramid has 5 sides.

hope this helps!
3 0
3 years ago
How do you to tell the difference between an ellipse, hyperbola, parabola, or circle if all are in standard form?
NeX [460]

Step-by-step explanation:

General form of a conic section is:

Ax² + Bxy + Cy² + Dx + Ey + F = 0

If B = 0:

Parabola: Either x² or y² term, but not both

Circle: x² and y² have the same coefficient

Ellipse: x² and y² have different positive coefficients

Hyperbola: x² and y² have different signs

Otherwise, look at the discriminant.

If B² − 4AC < 0, then the conic is an ellipse.

If B² − 4AC = 0, then the conic is a parabola.

If B² − 4AC > 0, then the conic is a hyperbola.

6 0
3 years ago
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