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Marina86 [1]
3 years ago
7

Simplify the following expression bracket parentheses 3 x 6 parentheses Plus parentheses 5 x 2 parentheses bracket divided by 7

Mathematics
1 answer:
spin [16.1K]3 years ago
3 0
{(3*6+(5*2)} /7
    18 +  10  /7
        28/7
           4 
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MrRa [10]

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Find y when x = 3 of the equation for y=2x+12
ser-zykov [4K]

Answer:

y = 18

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>

Step-by-step explanation:

<u>Step 1: Define</u>

y = 2x + 12

x = 3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                                                                                                y = 2(3) + 12
  2. Multiply:                                                                                                           y = 6 + 12
  3. Add:                                                                                                                 y = 18
3 0
3 years ago
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Which of the following has a solution set of {x | x = 0}?
Oliga [24]
Middle option.

<span>(x + 1 ≤ 1) ∩ (x + 1 ≥ 1)

If you work both sides separately you get

</span>(x  ≤ 0) ∩ (x ≥ 0)
<span>
which reduces nicely to 

</span><span>{x | x = 0}</span>
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yaroslaw [1]
11.25 - 2.75 = 8.50
174 - 72 = 102
102 / 8.50 = 12
They bought 12 tickets
4 0
3 years ago
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