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xokatexo
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Ian drives to town at 36 mph and returns at 48mph. If his total driving time is 3.5 hours, how far is he from town? Draw a diagram
 2 years ago
 2 years ago
xokatexo Group Title
Ian drives to town at 36 mph and returns at 48mph. If his total driving time is 3.5 hours, how far is he from town? Draw a diagram
 2 years ago
 2 years ago

This Question is Closed

Compassionate Group TitleBest ResponseYou've already chosen the best response.2
Use the formula for distance: \[d = r*t\]
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
dw:1348859120194:dw Fill out the chart
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Assuming by, "returns," it means Ian is back at the original position, then you have one unknown distance, two known rates, and two unknown times that are related by t1+t2=3.5
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
You can set up, initially, two independent equations with the unknowns 'd' and 't' and combine them (after making a substitution) into a single equation to solve for d.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
The instructions also ask for a diagram, so make sure you do that. Looking at a picture helps a lot to organized information.
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
dw:1348859501586:dw ???
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
That's ok, but you can't have the same variable, x, for both unknown times. Try t for the first time and 3.5t for the second time.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
That's not really a diagram  more of a chart or data table.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Like I said, the two equations combine into a single one easily enough once you see how they are related.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
dw:1348859649081:dw
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
That's close, but it's 3.5x (x stands for time), not 35x
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Yes, that's what you get when you set the two equations equal to each other (because the distance is the same).
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
The two unknown variables are distance and time, but you can eliminate distance momentarily to solve for time, and then sub that back in to one of the first two equations to find the distance.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
OK. I am explaining the general way to solve these sorts of problems that works every time. If you want to do it another way and it works then that's fine.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
But just to let you know. '2' is not the correct answer.
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
well you didn't help at all and i mean x = 2...f you helped maybe id get the right answer..
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
What about what I said do you think is not helping you? Do I need to explain the steps more clearly?
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
If you want to know how to do these problems the right way and get the correct answer every time, I can help you, but if you are going to be rude and blow me off, then I wish you luck figuring it out on your own.
 2 years ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
In your equation, x does equal 2, but that does not answer the question...
 2 years ago
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