We know d=rt. We are given that the total time is 1 hour.
Since d=rt, then t=d/r.
Let x=running time, as you stated.
I am in desperate need of help. I am in college algebra and just can NOT get modeling down, and I have a test on Monday! I am completely lost, and realize I should have gotten help before now but now I have no choice but to learn it all today and tomorrow. It's just the set up, I know how to do the problems. Is there any where besides my text that I can get help with these application problems? They're killing me, and I'm really worried I'm gonna fail this first test.
I do have a direct question though. I've been working through these the best I can, and just can not solve this one no matter what I do.
A woman cycles 8 mi/h faster than she runs. Every morning she cycles 4 mi and runs 2.5 mi, for a total of one hour of exercise. How fast does she run?
I know that her running speed is x, and that her cycling speed is 8+x, but I still can't get anywhere. Please help if you can.
Thank you so much guys! I'm going to be doing a load of review/studying tonight, and if I hit any road blocks I'll post them here.
Here is one more I just hit.
A parcel of land is 6ft longer than it is wide. Each diagonal from one corner to the opposite corner is 174 ft long. What are the dimensions of the parcel?
I get that, but I have no idea to do with the 174ft diagonal line, and how to set it up. It's like this with all of them, I can get some of it, it's just getting the rest that's been the problem. But once I understand it, I can easily apply it to the other problems.