The height (feet) of a ball launched in the air t seconds after it is launched is given by: f(t) = - - 16t2 + 267t + 10. After how many seconds is the ball falling at 140 feet per second? sec. If necessary, round to two decimal places. If there is more than one correct answer, separate them with commas.

The height (feet) of a ball launched in the air t seconds after it is launched is given by: f(t) = - - 16t2 + 267t + 10. After how many seconds is the ball falling at 140 feet per second? sec. If necessary, round to two decimal places. If there is more than one correct answer, separate them with commas.

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter6: Fractions

Section6.6: Mixed Expressions

Problem 40WE

See similar textbooks

Similar questions

The approximate distance d (in feet) that travel after noticing that they must come to a sudden stop is given by the following formula, where x is the speed of the car (in mi/h): d=x+x220 If a car travels 75 ft. before slopping, what was its speed before the brakes were applied?
The population P (in millions) of Texas from 2001 through 2014 can be approximated by the model P=20.913e0.0184t, where t represents the year, with t=1 corresponding to 2001. According to this model, when will the population reach 32 million?
A Skydiver When a skydiver jumps from an airplane, his downward velocity, in feet per second, before he opens his parachute, is given by v=1761-0.834t, where t is the number of seconds that have elapsed since he jumped from the airplane. What is the velocity after 5 seconds?
Find the unknown value. 27. y varies jointly with x and the cube root of 2. If when x=2 and z=27,y=12, find y if x=5 and z=8.
The radius r, in inches, of a spherical balloon isrelated to the volume, V, by r(V)=3V43 . Air is pumped into the balloon, so the volume after t seconds is given by V(t)=10+20t . a. Find the composite function r(V(t)) . b.Find the exact time when the radius reaches 10 inches.
Using Figure 7, solve f(x)=1 .