April 27th, 2009, 04:59 PM  #1 
Newbie Joined: Apr 2009 Posts: 16 Thanks: 1  height and feet???
The height y (in feet) of a ball thrown by a child is y=(?1/16x2)+(2x+5) where x is the horizontal distance in feet from the point at which the ball is thrown. (a) How high is the ball when it leaves the child's hand? (Hint: Find y when x=0.) feet =5 (b) What is the maximum height of the ball? feet =21 (c) How far from the child does the ball strike the ground? feet ???? cannot find C?/ I looked up it was 32 but not going through 
April 28th, 2009, 05:11 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,939 Thanks: 2210 
Your answers are correct. For (c), put y = 0 and solve for x (using the quadratic formula); the answer you looked up is incorrect.


Tags 
feet, height 
Search tags for this page 
how far from the child does the ball strike the ground,the height y (in feet) of a ball thrown by a child is,the height (in feet) of a ball thrown by a child is,the height y (in feet) of a ball thrown by a child is where x is the horizontal distance in feet from the point at which the ball is thrown.
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Height of the tower  rakmo  Algebra  3  March 28th, 2013 05:20 AM 
how much square feet is 191 acres?  napninjax  Algebra  2  September 10th, 2011 08:43 PM 
height of a pyramid?  peaceofmind  Calculus  3  May 22nd, 2011 05:57 AM 
Conversion of feet to inches  DogBot  Elementary Math  2  November 25th, 2007 12:57 PM 
Height of Pyramid  symmetry  Algebra  1  September 26th, 2007 11:51 AM 