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Dennis_Churaev [7]
3 years ago
15

What are the dimensions of this matrix?Help!!!

Mathematics
2 answers:
cupoosta [38]3 years ago
4 0

Answer:

The dimensions ⇒ 3 × 4

Step-by-step explanation:

* Any matrix has two dimensions

- Raw and column

- The dimensions very important in the operations on matrices

- We called the number of raw m and the number of column n

- We must write the number of raw before the number of column

- m × n is the dimensions of the matrix

* Example : If the dimension of a matrix is 2 × 3, that

  means the matrix has 2 raw and 3 column

* Now lets look to our problem

∵  It has 3 raw and 4 column

∴ Its dimensions is 3 × 4

marishachu [46]3 years ago
4 0

<u>Answer:</u>

Size of matrix = 3 × 4

<u>Step-by-step explanation:</u>

We are given the following matrix and we are to determine its dimensions:

\left [ \begin {array}{cccc} 1&-3&8&4\\7&5&3&0\\9&6&-2&-1 \end { array } \right ]

We know that the dimension of a matrix is written in the form:

<em>rows × columns</em>

Here we have 3 rows and 4 columns. Therefore, the size of this matrix is 3 × 4.

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sergeinik [125]

Answer:

75% of the data will reside in the range 23000 to 28400.

Step-by-step explanation :

To find the range of values :

We need to find the values that deviate from the mean. Since we want at least 75% of the data to reside between the range therefore we have,

1 - \frac{1}{k^2} =\frac{75}{100}

Solving this, we would get k = 2 which shows the value one needs to find lies outside the range.

Range is given by : mean +/- (z score) × (value of a standard deviation)  

⇒ Range : 25700 +/- 2 × 1350

⇒ Range : (25700 - 2700) to (25700 + 2700)

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3 0
3 years ago
Which presents the value of c
Tems11 [23]

Answer:

It's choice 2.  c = 3 sin 45 / sin 40.

Step by-step explanation:

m< A = 180 - 45-95

= 180 - 140

= 40 degrees.

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Cross multiply:

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8 0
3 years ago
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Write and solve a system of equations for this question please
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A circuit starts and ends at different vertices.<br> True<br> False
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Step-by-step explanation:

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2 years ago
Melania has two jobs. During the day she works as an office clerk, and in the evening she works as a cashier. her office job pay
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Lets x = # of hours Melania  works at <span>office clerk
and y = </span># of hours Melania  works as a <span>cashier

x + y = 38 so x = 38 - y
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substitute </span> x = 38 - y into 13x + 9.25y = 434

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answer
Melania  works at office clerk = 22 hours
Melania  works as a cashier = 16 hours
7 0
3 years ago
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