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Kaylis [27]
3 years ago
11

What are the dimensions of the matrix?

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
6 0

For this case we have that by definition, the dimension of a matrix is given by:

<em>The number of rows by the number of columns </em>

It is observed that we have a column that consists of three rows.

\left[\begin{array}{c}6&\\2&\\8&\end{array}\right]

Thus, the dimension of the matrix is 3 * 1

Answer:

3 * 1

Option A

denis-greek [22]3 years ago
3 0

Answer: 3 x 1

There are 3 rows and 1 column. We write the number of rows first. The rows are laid out horizontally while the columns are vertical. We say this is a "3 by 1 matrix".

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What is the slope of (-17,-11), (10,8)
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-11-8=-19
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slope=19/27
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A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip of 300
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Let p and m represent the numbers of miles in the plains and mountains, respectively.
.. p + m = 300 . . . . . . . the whole trip was 300 miles

time = distance/speed, so the trip time can be written as
.. p/90 + m/37.5 = 3 48/60
.. 5p + 12m = 1710 . . . . . . . . . . multiply by 450 to put in standard form

You can solve these two equations by any of several means. The variable p can be eliminated by subtracting 5 times the first from the second.
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Choose the correct equation for the line shown on the graph
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Is the ans i got correct?<br>the total surface area is 33.8cm² <br>​
ElenaW [278]

Given:

A prism with height 5 cm and equilateral triangular base with side 2 cm.

To find:

The total surface area of the prism.

Solution:

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A_1=\dfrac{\sqrt{3}}{4}a^2

Where, a is the side length.

Putting a=2, we get

A_1=\dfrac{\sqrt{3}}{4}(2)^2

A_1=\dfrac{\sqrt{3}}{4}(4)

A_1=\sqrt{3}

A_1\approx \sqrt{3}

The base and top of the prism are congruent so their area must be equal.

The lateral surface area of the prism is:

LA=Ph

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The lateral surface area of the prism is:

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Now, the total surface area is the sum of areas of bases and lateral surface area.

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A=33.46

Therefore, the total surface area is 33.46 cm².

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2 years ago
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