Answer
$z = 6.048$
Work Step by Step
$\frac{1.8}{z} = \frac{2.5}{8.4}$
$ 1.8 \times 8.4 = 2.5z$
$15.12 = 2.5z$
$z = 6.048$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.