Posted by **chemiii** on Tuesday, October 3, 2006 at 10:34pm.

The equation d =70t represents the distance in miles covered after traveling at 70 miles per hour for t hours.....what is d when t = 2.5?

...what is t when d =210?

please help im desperate here...iv been studying all day help me my brain hurts!!!!!!!!!!!

Now settle down and try to understand what is being asked here. You're given the formula

d=r*t where d is the distance traveled, r is the speed and t is the time taken. In this case r=70 so the formula is

d=70*t

If you want to know what d is when t=2.5, substitute 2.5 for t to get

d=70mph*2.5hr

Can you solve for d?

For the second one you're given

210mi=70mph*t

Can you solve for t?

## Answer this Question

## Related Questions

- math - The equation d =70t represents the distance in miles covered after ...
- math - Bobby has been driving at a constant speed for the last 30 minutes. If ...
- Math - You walk at 4 miles per hour for 1/2 hour, and then jog at 6 miles per ...
- Alebra - need to solve a word problem using linear equation in slope form. Ben ...
- math - substitute to find the value of the expression. A train must cover a ...
- math - Hannah took a trip yo visit her cousin. She drove 120 miles to reach her ...
- math - your family is driving to houston,texas.A sign indicates that you are 700...
- Math- Multi-step word problems - A plane traveling from Phoenix to Washington, D...
- math - two airplanes left the same airport traveling in opposite direction. if ...
- Math - john's columm covered the first 12 miles in 4 hours. he then increased ...

More Related Questions