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Karo-lina-s [1.5K]
3 years ago
7

Find element a23 if matrix A, if A=|2 -3 4| |5 0 -6| |7 2 -8|

Mathematics
1 answer:
Elis [28]3 years ago
5 0

Answer:

  -6

Step-by-step explanation:

The notation a23 refers to the element in row 2, column 3. That element is -6.

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When would you write an x in an equation?)
mafiozo [28]

Answer:

\Large \boxed{\mathrm{When \ a \ number \ is \ not \ known}}

Step-by-step explanation:

For example, a sum of a number and 6 is 12.

The number is unknown.

Let the number be x.

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We can solve for x (unknown number). Subtract 6 from both sides of the equation.

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4 0
3 years ago
Finish the factoring: (-7y+2)(5y+3)
taurus [48]
You will need to use FOIL for this, or distribute.

So you will multiply -7y and 5y, then -7y and 3
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Combine like terms:
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5 0
3 years ago
Read 2 more answers
If Colorado Springs, Colorado, has 1.2 times as many days of sunshine as Boston, Massachusetts, how many days of sunshine does e
Paul [167]

Colorado and Boston have 263 and 219 days of sunshine respectively.

<h3>What is the solution to the Equation?</h3>

Let the number of days of sunshine in Colorado is x and the number of days of sunshine in Boston is y.

Total number of days of sunshine=482

Also, the number of days of sunshine in Colorado is 1.2 times the number of days of sunshine in Boston.

So, the equation is formed as follows:

x+y=482  -(1)

The other equation is formed as:

x=1.2y  -(2)

Substitute the value x from equation (2) in (1),

1.2y+y=482

2.2y=482

y=482/2.2

y=219

Substitute the value of y in equation (1),

x+219=482

x=482-219

x=263

Learn more about Equations here:

brainly.com/question/2972832

#SPJ4

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Answer:

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