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jeka57 [31]
3 years ago
7

Solve for k: 0.8k - 20 = -60

Mathematics
2 answers:
Harrizon [31]3 years ago
5 0

Answer:

k = - 50

Step-by-step explanation:

0.8 k - 20 = - 60

Add 20 to each side

0.8 k - 20 + 20 = - 60 + 20

0.8 k = - 40

divide each side by 0.8

0.8 k / 0.8 = -40 / 0.8

k = - 50

gulaghasi [49]3 years ago
3 0

Answer:

k = -50

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
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

0.8k - 20 = -60

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

  1. [Addition Property of Equality] Add 20 on both sides:                                  0.8k = -40
  2. [Division Property of Equality] Divide 0.8 on both sides:                              k = -50
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