pls help!!
in Algebra 1 Answers by Level 1 User (360 points)

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

h=13t²-5t. This can be written h=13(t²-5t/13)⇒h=13(t²-5t/13+(5/26)²-(5/26)²).

h=13(t-5/26)²-25/52. In this form it’s possible to see that when t=5/26=0.19 sec, approximately, the maximum depth is 25/52=0.48m approx, because all other values of t make h less negative, i.e., the diver is closer to the surface. And when h=t(13t-5)=0 (on the surface) t=0 (initial condition on commencement of the dive) and t=5/13=0.38 seconds, which is twice the time it took to reach maximum depth.

by Top Rated User (775k points)

Related questions

Welcome to, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,249 questions
90,480 answers
80,216 users