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earnstyle [38]
3 years ago
12

You have learned several methods for solving a system of equations. First, rank the methods in order of preference, noting which

one you would choose to solve a system. Next, describe how to use the method you prefer and give reasons why it is your preferred method. Last, consider your least-preferred method and explain why you placed it at the bottom of your list.
Mathematics
1 answer:
kifflom [539]3 years ago
6 0
Methods for solving a system of equations:
- elimination
- substitution
- augmented matrix

Ranks of method ( number one being the most preferred method)
1) elimination
2) substitution
3) augmented matrix


Elimination is my preferred method because it is simple and easy to work out and hard to get wrong.


Augmented matrix is my least preferred method because it is easy to get wrong and it requires complex steps to solve a simple equation.

Hope this helps ;)


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What is the derivative of e to the poker minus x
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(e^{-x})'=e^{-x}\cdot(-x)'=e^{-x}\cdot(-1)=-e^{-x}
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Find the difference. 7 7/8 - 3 1/4 ?
astraxan [27]
7 7/8= 63/8

3 1/4= 13/4

63/8 -13/4  we bring to the same denominator

(63-26)/8=  37/8
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Find all real zeros of the function f(x) = 12<br> a. 5,7<br> b. 12<br> c.1<br> d. none
nydimaria [60]

Answer:

d

Step-by-step explanation:

3 0
3 years ago
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I'm not sure what this means, please help me I'll give you 10 points ;)
Karo-lina-s [1.5K]

<u>Answer:</u>

So all the possible solutions are:

  • \bold{523,~400,~379~and,~378.6}

<u />

<u>Solution Steps:</u>

<em>First you need to solve the real inequality to understand how to find the rest of the possible equations. </em>

<u>Add 78 to both sides:</u>

  • <u />78+78= Cancels Out
  • 300+78=378

<em>So now we know the real answer, but it ask for all possible answers. </em>

(Means anything larger than 300 when you plug it into x - 78 > 300.)

<u>Numbers that are greater than 378:</u>

  1.)  377-78=299 > 300  (False)

  2.)  523-78=445>300  (True)

  3.)  0-78=-78>300  (False)

  4.)  -62-78=-140>300  (False)

  5.)  400-78=322>300  (True)

  6.)  379-78=301>300  (True)

  7.)  222-78=144>300  (False)

  8.)  378.6-78=300.6>300 (True)

______________________________

 \bold{Hope~this~helps!}\\\bold{If~you~need~help~with~anything~else,~feel~free~to~ask!}\\\\\bold{~~~~~-TotallyNotTrillex}

5 0
3 years ago
Tom bought a PS4 on Black Friday for 25% off. If the system sells for $399, what is the sales price of the PS4?
Delicious77 [7]

Answer:

The sales price of the PS4 is $532.

Step-by-step explanation:

The system sells for $399 after giving 25% off on a Black Friday on the sales price.

Let the sales price of the PS4 system is $x.

Then after giving 25% discount the price will become x(1 - \frac{25}{100}) = 0.75x

Therefore, 0.75x = 399

⇒ x = 532  

Therefore, the sales price of the PS4 is $532. (Answer)

7 0
3 years ago
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