Ask a Question
or
Create a Poll
  1. Home /
  2. Questions /
  3. Science
  4. / Mathematics
  5. / Algebra
  6. / General Algebra

by Allirenae on May 2nd, 2010

Allirenae

Question

Help answer this question below.

A ball is thrown vertically upward from roof of a bulding thats 194 feet high w/the speed of 64 mph. Find answer by h=-16t^2+64t+192.Factor?

Share:
Other

Answers. 2 helpful answers below.

  • by douglasmkilmer on May 3rd, 2010

    douglasmkilmer

    If you want to find t when h equals zero, then your equation becomes:

    -16t² + 64t + 192 = 0

    Divide by both sides by -16 and your equation becomes:

    t² - 4t - 12 = 0

    This will factor into the form:

    (t - a)(t + b) = 0

    You must now find "a" and "b" such that ab = -12 and b - a = -4.

    I bet that you can do it.

    Remember that the only valid value for "t" is going to be the (t - a) factor. You must discard the (t + b) factor, because negative time makes no sense.

    No comments. Post one | Permalink

  • by engineer is Terminator on May 2nd, 2010

    engineer is Terminator

    First of all, the question doesn't say what you need to find.

    If it asks you to find the time, then you could equate height with the time variable equation you have given and find out the t by solving the quadratic equation.

    No comments. Post one | Permalink

Want to attach an image to your answer? Click here.

Did this answer your question? If not, then ask a new question or create a poll.

More Questions. Additional questions in this category.

You're reading A ball is thrown vertically upward from roof of a bulding thats 194 feet high w/the speed of 64 mph. Find answer by h=-16t^2+64t+192.Factor?

Follow us on Facebook!

Related Ads

Related Questions

Professionally Researched

ANSWERBAG BUZZ

If a ball is thrown vertically upward with a velocity of
If a ball is thrown vertically upward with a velocity of 80 given y 80t 16t 2
If a ball is thrown vertically upward from the roof of 64 foot building with a velocity of 80 ft sec then what is the maximum height the ball reaches what is the velocity of the ball when it hits the ground
Finding quadratic equation of a ball thrown
Height ball thrown factoring

Answerbag

a Demand Media company