1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yulyashka [42]
2 years ago
11

A woman jogs for 2 km at 8 km/h and then walks for 2 km

Mathematics
1 answer:
Artemon [7]2 years ago
3 0

Answer:

  6 6/7 km/h

Step-by-step explanation:

The relations between speed, time, and distance are ...

  time = distance/speed

  speed = distance/time

__

So, to find the average speed, we need to know the total distance and the total time. The distances are given, but we need to compute the times.

  time jogging = (2 km)/(8 km/h) = 1/4 h

  time walking = (2 km)/(6 km/h) = 1/3 h

Then the woman's average speed is ...

  average speed = (total distance)/(total time) = (2 km + 2 km)/(1/4 h + 1/3 h)

  = (4 km)/(7/12 h) = 48/7 km/h

  = 6 6/7 km/h

You might be interested in
ebony wants to buy a dvd player and dvds the equation relates the total cost for dvds and dvd player and N dvds is p=20n+200 wha
kupik [55]

____________________________________________________

Answer:

It represents the cost of the DVD player.

____________________________________________________

Step-by-step explanation:

The reason why it represents the cost of the DVD player is because in the question, it doesn't mention anything about buying multiple DVD players. Ebony would need to buy many DVD's, but doesn't need many DVD players because ebony could use one for all of the DVD's. If you noticed in the question, it says "a DVD player," what  this means is that Ebony is only going to buy one DVD player, since it's singular (without and s at the end).

The equation is saying that she starts off with buying 1 DVD player for 200 dollars; and, she is buying n (number of DVDs) for 20 dollars each.

This shows that the 200 in the equation in the question represents the cost of the DVD player.

____________________________________________________

3 0
3 years ago
Calculate the mean, median, and range of the data in the dot plot.
Mama L [17]

Answer:

median = 5

range = 2

mean = 11

Step-by-step explanation:

7 0
2 years ago
Marcy played the piano for 45 minutes. She stopped playing at 4:15 p.m. At what time did she start playing the piano ?
ololo11 [35]
Well, first off 1 hr =60 minutes. 60 min - 45 min = 15 minutes extra. what is one hour before 4:15? 3:15! Add the subtracted 15 minutes to get 3:30... Hope this helps
4 0
3 years ago
A gardener is planting two types of trees. Type A is three feet tall and grows at a rate of of 15 inches or year. Type B is four
Lady bird [3.3K]
In between the first year
5 0
2 years ago
Chatty made this square picture. She wants to glue yarn around the border to make a frame. How much yarn does she need?
Romashka [77]

Answer:

60 inches

Step-by-step explanation:

s = 15 in

Perimeter of a Square = 4 s

                                     = 4 × 15

                                     = 60 in

∴Chatty needs 60 inches of yarn.

Hope that helps!!

Please mark as Brainliest!!

7 0
3 years ago
Read 2 more answers
Other questions:
  • the distance between earth and the moon is about 238,900 miles. round this number to the nearest ten thousand
    6·1 answer
  • BRAINLIEST AND WORTH 10 POINTS!
    11·1 answer
  • Simon can see two lights, light A and light B.
    6·1 answer
  • P − 4.8 less than or = to 6.
    11·2 answers
  • What is 2.85714285714 converted as a fraction
    9·1 answer
  • The number of cases of a new disease can be modeled by the quadratic regression equation y = –2x2 + 36x + 6, where x represents
    13·1 answer
  • I know i have been asking alot of questions today but i really need your help
    5·2 answers
  • After the data was recorded in the dot plot, another response was found for a participant who watches 30 hours of television eac
    6·1 answer
  • Help pls I’ll give extra points
    6·1 answer
  • An employee worked for 8 hours on 2 days, 6 hours on 1 day, and 4 hours on 2 day
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!