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
Dmitrij [34]
3 years ago
9

Julissa is running a 10-kilometer race at a constant pace. After running for 18 minutes, she completes 2 kilometers. After runni

ng for 54 minutes, she completes 6 kilometers. Her trainer writes an equation letting t, the time in minutes, represent the independent variable and k, the number of kilometers, represent the dependent variable.
Which equation can be used to represent k, the number of kilometers Julissa runs in t minutes?
Mathematics
2 answers:
allochka39001 [22]3 years ago
7 0

After running for 18 minutes, Julissa completes 2 kilometers. If she is running a 10-kilometer race at a constant pace, then she comletes 1 kilometer after running 9 minutes. Now you can find the distance she run after 1 minute. This is \dfrac{1}{9} km.

Let t be the time in minutes. Then k, the number of kilometers, can be found from proportion:

\dfrac{1}{9}\ km - 1 minute

k km - t minutes.

Thus,

\dfrac{\dfrac{1}{9}}{k}=\dfrac{1}{t},\\ \\k=\dfrac{1}{9}\cdot t.

Answer: k=\dfrac{1}{9}\cdot t.

svlad2 [7]3 years ago
6 0
18 mins = 2 km
1 min = 2 ÷ 18 km = 1/9km

at t minutes
 k = t/9 km

---------------------------------
Answer: k = t/9 km
---------------------------------


You might be interested in
Round 100.9052 to the nearest 10th
laiz [17]

Answer:

100.9

Step-by-step explanation:

The 10th place is the one one right after the decimal, in this case 9. Since there's a 0 next to the nine you don't have to change anything. Thus you get 100.9

7 0
3 years ago
What factors do 8 and 12 have in common​
Marina86 [1]

Answer:

the factors 1,2,4

5 0
3 years ago
Which operation should you perform first when evaluating the expression:
nevsk [136]

Answer: the power so ans should be 81

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Ke in order to repay the mo 92 - (12 + 16) 4 Gracie need to make in order​
valentinak56 [21]

Good question i just can't figure it out!

3 0
3 years ago
What is 566.8 divided by 52
vampirchik [111]
<h3>Answer: It's 10.9 </h3><h3>hope this helps have a awesome day/night❤️✨</h3>

Step-by-step explanation:

Step 1

The first step is to set up our division problem with the divisor on the left side and the dividend on the right side, like we have it below:

5  5 2

Step 2

We can work out that the divisor (5) goes into the first digit of the dividend (5), 1 time(s). Now we know that, we can put 1 at the top:

1  

5  5 2

Step 3

If we multiply the divisor by the result in the previous step (5 x 1 = 5), we can now add that answer below the dividend:

1  

5  5 2

5  

Step 4

Next, we will subtract the result from the previous step from the second digit of the dividend (5 - 5 = 0) and write that answer below:

1  

5  5 2

- 5  

0  

Step 5

Move the second digit of the dividend (2) down like so:

1  

5  5 2

- 5  

2  

Step 6

The divisor (5) goes into the bottom number (2), 0 time(s), so we can put 0 on top:

1 0  

5  5 2

- 5  

2  

Step 7

If we multiply the divisor by the result in the previous step (5 x 0 = 0), we can now add that answer below the dividend:

1 0  

5  5 2

- 5  

2  

0  

Step 8

Next, we will subtract the result from the previous step from the third digit of the dividend (2 - 0 = 2) and write that answer below:

4 0
3 years ago
Other questions:
  • Simplify: 10!/[4!*(10-4)!)]
    11·1 answer
  • Can you answer these 3 questions for me plz
    14·2 answers
  • A line has the same slope as the line 3x+9y=5 and passes though the point (-1,2).what is the equation of the line?
    13·1 answer
  • How is a net useful when finding the surface area of prisms and pyramids
    5·1 answer
  • Plz help this is what might get m to a 100 so plz help me
    11·1 answer
  • The owner of a busy coffee shop wanted to see if it was worth keeping tea on the menu. She logged the number of cups of tea she
    13·1 answer
  • Answers for the 2 boxes please :)​
    12·2 answers
  • Calculate the volume of a rectangular prism with the same base area and the same height as the pyramid above.
    8·1 answer
  • A local little league has a total of 65 players, of whom 20% are right-handed. How many
    10·1 answer
  • What is the value of b in ax - by = -5
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!