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nevsk [136]
3 years ago
12

Hey this subjects really hard for me can someone answer please its 50 points

Mathematics
1 answer:
OleMash [197]3 years ago
4 0
Hchfihoyfohxocohcohcoycohcohohcohvih
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If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x'
Inessa05 [86]
2 times 2=4
multiply first equation by 2 to get
-4x+6y=12
then add to get

-4x+6y=12
<u>4x-2y=8 +</u>
0x+4y=20

4y=20
y=5

sub back
-2x+3y=6
-2x+3(5)=6
-2x+15=6
-2x=-9
x=9/2=4.5


the number to multiply by is 2
7 0
3 years ago
−1/2 (x+2) + 112x = 3<br><br> x=?
AysviL [449]

Given equation :−1/2 (x+2) + 112x = 3

We have -1/2 in front of parenthesis on left side .

It's better to remove fraction in an equation, in order make it easier to solve.

In order to remove 2 from denominator of 2, we need to multiply each and every term by 2.

Multiplying each term in the equation by 2, we get

2* −1/2(x+2) +2* 112x = 2*3.

On simplifying this step, we get

-1(x+2) +224x = 6.

Distributing -1 over (x+2), we get

-x -2 +224x = 6

Combining like terms on left side, -x+224x=223x

223x -2 = 6

Adding 2 on both sides, we get

223x -2+2 = 6+2

223x = 8

Dividing both sides by 223, we get

223x/223 = 8/223.

x= 8/223.

6 0
3 years ago
What is the square root of 16x^36
Blababa [14]

<span><span><span><span><span><span><span><span><span><span><span><span><span>this is the answer(</span></span><span><span><span><span>4</span></span><span><span /></span><span><span><span><span>x</span></span></span><span><span><span>2</span></span></span></span></span></span><span><span>)</span></span></span></span><span><span><span>2 </span></span></span></span></span></span></span></span></span></span></span></span><span>4⁢x22</span>
8 0
3 years ago
Read 2 more answers
I really need help on this problem. I don’t get it
Sveta_85 [38]
The domain is {-9,-4,3,9}
The range is {2}
8 0
3 years ago
8) What is the difference of 2x2 - 4x + 6 and<br> 5x2 + 8x - 2?<br> I will mark brainlist
MariettaO [177]

Answer:

-3x² - 12x + 8

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

2x² - 4x + 6 - (5x² + 8x - 2)

<u>Step 2: Simplify</u>

  1. (Parenthesis) Distribute negative:                                                                   2x² - 4x + 6 - 5x² - 8x + 2
  2. Combine like terms:                                                                                         -3x² - 12x + 8
3 0
3 years ago
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