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andre [41]
3 years ago
7

Q = d / d+ n on a manufacturer's assembly line, d parts are found to be defective and n parts are nondefective. the formula abov

e is used to calculate a quality-of-parts ratio. What is d expressed in terms of the other two variables?
a. n / 1 - q
b. nq / 1 - q
c. n / q-1
d. nq / q-1
Mathematics
1 answer:
irakobra [83]3 years ago
3 0

Answer:

d. nq / q - 1

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Equality Properties

<u>Algebra I</u>

  • Factoring

Step-by-step explanation:

<u>Step 1: Define</u>

q = d / (d + n)

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

  1. Multiply (d + n) on both sides:                    q(d + n) = d
  2. Distribute q:                                                 dq + qn = d
  3. Subtract qn on both sides:                         dq = d - qn
  4. Subtract d on both sides:                           dq - d = -qn
  5. Factor GCF:                                                 d(q - 1) = -qn
  6. Divide (q - 1) on both sides:                        d = -qn / (q - 1)
  7. Rearrange:                                                   d = nq / -(q - 1)
  8. Distribute -1:                                                 d = nq / 1 - q
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