Answer
d = $\frac{4D}{f}$
Work Step by Step
Solve for k by isolating it to one side of the equation:
D = $\frac{1}{4}$fk
Multiply both sides by 4:
4D = fk
Divide both sides by f:
$\frac{4D}{f}$ = k
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 2 - Section 2.5 - Formulas and Problem Solving - Exercise Set - Page 146: 20
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