Statstics

posted by .

Cities A, B, C and D are equidistant. That is, B is d miles from A, C is d miles from B, and D is d miles from C. Suppose you travel 55 mph from A to B, 40 mph from B to C, and 50 Mph from C to D. What single, constant speed could you have traveled from A to B to C to D that would have taken the same amount of time?

  • Statstics -

    I know that I am supposed to use harmonic mean. Just not sure how to set up formula.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Calculus, antiderivatives

    A student accelerates from rest at a rate of 3 miles/min^2. How far will the car have traveled at the moment it reaches a velocity of 65 miles/60 min?
  2. math

    13. If two planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph?
  3. Math

    Cities A, B, C and D are equidistant. That is, B is d miles from A, C is d miles from B, and D is d miles from C. Suppose you travel 55 mph from A to B, 40 mph from B to C, and 50 Mph from C to D. What single, constant speed could …
  4. Trigonometry

    An airplane is flying on a heading of 115° with a constant velocity of 675 mph. How far south will it travel in 2 hours if it continues to maintain its velocity?
  5. Science

    A car traveled at an average speed of 60 mph for two hours. How far did it travel?
  6. Math

    A surfer drives his dune buggy out into the sand dunes.He follows his compass 10 miles due north and then turns due west. If he ends up approximately 35 miles from where he started how far west did he travel?
  7. Math

    Stephanie runs 5 days a week. Her distances for 5 days are 2.8 miles, 3.3 miles, 3.9 miles, 4.3 miles, and 4.9 miles. Which is the best estimate for the number of miles she ran?
  8. Physics

    Two trains are moving toward each other with speeds of 23 mph and 37 mph. How far apart are they before they pass each other?
  9. math

    one day a sailor was sailing 32 miles from the shore. he then went 22 miles east then 67 miles north. How far did he travel straight?
  10. Physics

    A car travels along a straight stretch of road if receipts for 13.6 miles at 55 mph than 25.8 miles at 48 mph and finally 43.1 miles at 33 mph what is the cart average velocity during the entire trip answer in units of miles per hour

More Similar Questions