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AleksandrR [38]
3 years ago
7

Expand the following equation:5x(3-7y)​

Mathematics
2 answers:
densk [106]3 years ago
4 0

Answer:

15x - 35xy

5x * 3 - 5x * 7y

15x - 35xy

Leokris [45]3 years ago
3 0

Answer:

Step-by-step explanation:

15x-35x

25x is the answer

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AA similarity theorm

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Solve system of equation by elimination:
mars1129 [50]

Answer:

a. (4, 1)

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>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

-x + 4y = -8

-5x - 4y = -16

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Elimination</em>

  1. Combine equations:                     -6x = -24
  2. Isolate <em>x</em>:                                        x = 4

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                   -x + 4y = -8
  2. Substitute in <em>x</em>:                      -4 + 4y = -8
  3. Isolate <em>y</em> term:                       4y = -4
  4. Isolate <em>y</em>:                                y = -1
4 0
3 years ago
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What is 3 times the sum of a and b? <br><br> This needs to be written as an algebraic expression!
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3(a + b) the answer to the question
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3 years ago
I don’t understand any of this and its dude tomorrow someone help ;)
faltersainse [42]
You should get the app "photomath" that'll help you out alot!!!
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