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Law Incorporation [45]
3 years ago
9

4. Which of the following is a true statement?

Mathematics
2 answers:
Anna [14]3 years ago
8 0
B. Is the true statement
umka21 [38]3 years ago
3 0
Answer: B) -7(4x - 8) = -28x + 56

Step-by-Step Explanation:

=> -7(4x - 8) = -28x + 56
On opening the brackets on L.H.S,
= -28x + 56 = -28x + 56
=> L.H.S = R.H.S

Therefore this is a True Statement
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A cylindrical well is 20 meters deep and has a diameter of 1.5 meters. Approximately how many cubic meters of soil were dug out
Lynna [10]
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4 years ago
Read 2 more answers
5x -9y =-26<br>-2x +3y =11​
kogti [31]

Answer:

(-7, -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

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

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

5x - 9y = -26

-2x + 3y = 11

<u>Step 2: Rewrite Systems</u>

-2x + 3y = 11

  1. Multiply everything by 3:                    -6x + 9y = 33

<u>Step 3: Redefine Systems</u>

5x - 9y = -26

-6x + 9y = 33

<u>Step 4: Solve for </u><em><u>x</u></em>

<em>Elimination</em>

  1. Combine 2 equations:                    -x = 7
  2. Divide -1 on both sides:                  x = -7

<u>Step 5: Solve for </u><em><u>y</u></em>

  1. Define equation:                    5x - 9y = -26
  2. Substitute in <em>x</em>:                       5(-7) - 9y = -26
  3. Multiply:                                  -35 - 9y = -26
  4. Add 35 on both sides:           -9y = 9
  5. Divide -9 on both sides:        y = -1
3 0
3 years ago
Read 2 more answers
Help!! 45 pts<br> f(x)= 2x²-3x+4 What is the value using the theorem for f(3) with explanation?
polet [3.4K]

Answer:

f(x) = 5

Step-by-step explanation:

f(x) = 2x^2 - 3x+4

f(3) =2x^2 - 3x + 4

f(3) = 2(3)^2 - 3(3) + 4

f(3) = 18 - 13

f(x) = 5

Hope this helped :-)

7 0
3 years ago
What is [5x6] divide by 5+4-3
Anestetic [448]

Answer:

7

Step-by-step explanation:

(5x6) equals 30, then 5+4-3 equals 6. So divide 30 and 6 and you'll get... actually this is starting to confuse me.

8 0
4 years ago
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