 |
|
| Browse | Ask | Answer | Search | Join/Login |
|
|
||||
|
solving rational expressions
Alice is in a 20-km running race. She always runs the first half at an average speed of 2 km/h faster than the second half.
a) Let x represent her speed in the first half. Determine a simplified expression in terms of x for the total time needed for the race. b) If alice runs the first half at 10km/h, how long will it take her to run the race? |
||||
|
|
|
||||
|
If x is the rate at which she runs the second half, then x+2 is the rate she runs the first half. Her average velocity is then If x=10, what is her average rate? Use that to find how long it takes her to run 20 km at that rate. |
||||
|
|
| Question Tools | Search this Question |
Check out some similar questions!
OK I need help with this problem I am trying to figure out exactly where I have gone wrong with it I am not sure even if I have done it right Evaluate and simplify; express answer with only positive exponents. (25a^8b^16)^-1/2 now I don't see where I can make the check mark thingie for...
Simplify express ans./only positive exponents (x^-2y^4)/(4y^-3)^2 =1/4x^-2^-2y^4(-3) =1/4x^-2-2y^4+3 =1/4x^4y^1
This is a Rational Expression Add: 2/x+1 + 1/x-1
I need help with some questions so if u could help that would be greatly appreciated! :D 1) 8/7v-6 + 4/ 3v^2 2) 7x/2x - x-2/ 20x +16 THANK YOU VERY MUCH:D Lizzie
I'm crap at math to I have a test today about rational expressions and comples fractions CAN U HELP? HOW DO I SOLVE THESE?
View more questions Search
|
