Posted by angela on Thursday, February 26, 2009 at 7:54am.
A student walks and jogs to college each day. She averages 5km/h walking and 9km/h jogging. The distance from home to college is 8km and she makes the trip in 1 hour. How far does the student jog.
To set up the equation I got:
but this gives me a negative number for the walking.
WHAT IS THE CORRECT WAY TO SET UP AND SOLVE THE EQUATION?
math algebra - Damon, Thursday, February 26, 2009 at 8:02am
You x is TIME, not distance
5(x) + 9 (1-x) = 8
5 x + 9 -9 x = 8
- 4x = - 1
x = 1/4 or 15 minutes walking
3/4 hour jogging
3/4 * 9 = 27/4 = 6.75 km jogging
math algebra - mark, Thursday, February 26, 2009 at 8:06am
OOOH! I see, thanks for the help!
math algebra - surer, Thursday, February 26, 2009 at 10:26am
i need help with my homewok please help out and is hard that why i am asking help.
math algebra (surer) - drwls, Thursday, February 26, 2009 at 5:57pm
Post your question separately, not as part of this question. Click on the link at the top labeled "Post a new question"
Answer This Question
More Related Questions
- algebra - A student walks and jogs to college each day.She averages 5km/h ...
- algebra...redo. - Yesterday Lucy walked 2 hours and jogged 1/2 hour and covered ...
- Math - You walk at 4 miles per hour for 1/2 hour, and then jog at 6 miles per ...
- math - Yesterday Lucy walked 2 hours and jogged 1/2 hour and covered 6.25 miles...
- 11th grade - Yesterday Lucy walked 2 hours and 1/2 jogged hour and covered 6.25 ...
- 6 - A student begins at rest and then walks north with an average speed of v1 = ...
- math - On a treadmill, Andrea walks a distance of 2 km. She then doubles the ...
- math - You are driving home from college steadily at 95km/hour for 130km. It ...
- Math - a woman drives to work and averages 70 kilometers per hour for the trip. ...
- Math - Amy jogs 1/3 of a mile in 1/15 of an hour, while John takes 1/30 of an ...