Answer
$10.54$ seconds
Work Step by Step
Find the value of $t$ at which $L = 90$
$90 = 0.81t^2, t^2 = 111.11, t = 10.54$
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 4 - Quadratic Functions and Equations - 4-5 Quadratic Equations - Practice and Problem-Solving Exercises - Page 230: 38
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