Mathematics: Help me please with this question

Help me please with this question - id8910607, webbhlharryteach

Ответ:

karen718

08.02.2022

Mathematics

see explanation

Step-by-step explanation:

2B + 3C

= 2 $\left[\begin{array}{ccc}4&-5\\-2&1\\\end{array}\right]$ + 3 $\left[\begin{array}{ccc}1&-1\\-6&3\\\end{array}\right]$

Multiply each element in the matrices by the scalar quantity, that is

= $\left[\begin{array}{ccc}8&-10\\-4&2\\\end{array}\right]$ + $\left[\begin{array}{ccc}3&-3\\-18&9\\\end{array}\right]$

Add corresponding elements from each matrix

= $\left[\begin{array}{ccc}8+3&-10-3\\-4-18&2+9\\\end{array}\right]$

= $\left[\begin{array}{ccc}11&-13\\-22&11\\\end{array}\right]$

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Ответ:

kutsarver

10.04.2021

Mathematics

First lets make each fraction a number, 5/12 as a decibel, is 2.5. 1/2 as a decimal is 0.5

We had converted the fractions to equivalent decibels, 2.5 + 0.5 is 3

Now we either switch 10/12 to a decibel or keep 10/12 as a fraction.

In this case id keep 10/12 as a Decibel and add then up once you figured out whats 10/12 as a decibel then,

Check witch decibel is bigger.

[AWNSER]

10/12 is bigger

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