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
Daniel [21]
3 years ago
8

John can jog twice as fast as he can walk. He was able to jog the first mile to his grandmas house but then he got tired and wal

ked the remaining 4 miles. If the total trip took 0.75 hours, then what was his average jogging speed
Mathematics
1 answer:
statuscvo [17]3 years ago
7 0

Answer:

  12 mph

Step-by-step explanation:

The relationship between jogging speed and walking speed means the time it takes to walk 4 miles is the same as the time it takes to jog 8 miles. Then the total travel time (0.75 h) is the time it would take to jog 1+8 = 9 miles. The jogging speed is ...

  (9 mi)(.75 h) = 12 mi/h . . . average jogging speed

__

<em>Check</em>

1 mile will take (1 mi)/(12 mi/h) = 1/12 h to jog.

4 miles will take (4 mi)/(6 mi/h) = 4/6 = 8/12 h to walk.

The total travel time is (1/12 +8/12) h = 9/12 h = 3/4 h. (answer checks OK)

_____

<em>Comment on the problem</em>

Olympic race-walking speed is on the order of 7.7 mi/h, so John's walking speed of 6 mi/h should be considered quite a bit faster than normal. The fastest marathon ever run is on the order of a bit more than 12 mi/h, so John's jogging speed is also quite a bit faster than normal. No wonder he got tired.

You might be interested in
What percent of 90 is 36?<br> 40%<br> 32.4% <br> 250%
DaniilM [7]

Answer:

Step-by-step explanation:

40% is the correct answer

8 0
3 years ago
Read 2 more answers
ANSWER IS C
MA_775_DIABLO [31]

Answer:

x <2

Step-by-step explanation:

2.5 – 1.2x < 6.5 – 3.2x

Add 3.2x to each side

2.5 – 1.2x+3.2x < 6.5 – 3.2x+3.2x

2.5 +2x < 6.5

Subtract 2.5 from each side

2.5+2x-2.5<6.5-2.5

2x<4

Divide by 2

2x/2 < 4/2

x <2

8 0
2 years ago
Find the missing side length.<br> 12<br> 15
sashaice [31]

Answer:

you need to show the shape or somet or else I can't rlly help

7 0
2 years ago
Read 2 more answers
An 8th grade class project involves decorating a rectangular box with the following dimensions.
Margarita [4]

Answer:1500

Step-by-step explanation: so i got the anwser 1539.2 and just rounded to the nearest hundredth which is 1500 hopefully it helps!

5 0
3 years ago
abrl,belle and cindy have $408 altogeter.belle has $7 more than cindy and $5 more than abel.how much does abel have?
faltersainse [42]
ABC = 408 
C + 7 = B
A + 5 = B 

B - 7 + B - 5 + B = 408
3B - 12 = 408
     + 12 = +12
3B = 420
/3   = /3
B = 120
A = 115
C = 113
The answer is A = 115, Abel has $ 115

4 0
3 years ago
Other questions:
  • Use De Moivre's theorem to express cos 5θ and sin 5θ in terms of sin θ and cos θ.
    8·1 answer
  • I need help with #18 please
    10·2 answers
  • What is the value of the x-intercept for the graph of 4x-5y=40?
    10·1 answer
  • A right triangle has a hypotenuse of 25 feet and a leg of 7 feet. Which of these is the length of the other leg?
    13·1 answer
  • A = b + c / d <br><br> What does b equal ???
    14·1 answer
  • Suppose that Upper X has a discrete uniform distribution f left-parenthesis x right-parenthesis equals StartLayout left-brace1st
    5·1 answer
  • Free 100 plus Brainliest to the first person
    6·2 answers
  • Tom earns ​$12 a week mowing lawns. He spends
    6·2 answers
  • Help please marking brainlist!!
    15·1 answer
  • 0.3 x 0.9 <br><br> Help Please!! WIll mark Brainliest!
    11·3 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!