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
TiliK225 [7]
2 years ago
12

The time, t, it takes a runner to cover a specified distance is inversely proportional to the runner's speed. If Jann Avery runs

at an average of 6 miles per hour, she
will finish a race in 2. 1 hours. How long will it take Jackie Donofrio, who runs at 4 miles per hour to finish the same race?
Mathematics
1 answer:
Sveta_85 [38]2 years ago
5 0

To solve this problem you will need this tool, it is the formula of speed :

<em>speed = distance/time</em>

(I suggest you to remember this one for life, it is a really useful one)

Let's check how long that Jackie nice dude will take to finish the race...

Jann avery runs at an average of 6 mph (miles per hour), so we already got the speed for our formula. And she will finish the race in 2.1 hours so we got the time. What do we miss ? The distance.

Let's write what we already know to solve this puzzle :

6 = d / 2.1

Where d is that unknown distance..  So we are in front of an equation here let's solve it :

d / 2.1 = 6

d = 6 * 2.1

d = 12.6 miles

Now that we know that distance, for the race, we can see if that poor Jackie Donofrio has all his chances to catch Jann Avery...

We already know his speed... and since we have the distance, we write :

4 = 12.6 / t

Where t is the unknown time, for Jackie, to finish the same race. Let's solve the equation :

4t = 12.6 (we multiplied t on each side of the equation)

t = 12.6 / 4

t = 3.15

Jackie Donofrio, who runs at 4 miles per hour, will finish the race in 3.15 hours

Good Luck

You might be interested in
Justin had 5 dogs he gave his friend 4 How many dogs dose justin have now
zloy xaker [14]
1 because he HAD 5 and if he gave his friend 4 than he has 1 left, 5-4=1 my friend.
5 0
3 years ago
Please help with algebra question.
Radda [10]
We have that

y< 6x-3

using a graph tool
see the attached figure

the answer in the attached figure

8 0
3 years ago
Restate this: Historians know about the past before there were written records by studying artifacts
Natali [406]

Answer:

There were written records by studying aircrafts before historians know about the past.

Step-by-step explanation:

8 0
2 years ago
Yeah i need major help with this
Lady_Fox [76]

Answer:

See below

Step-by-step explanation:

I'm not sure if there are any specific instructions on how these answers are supposed to be written, but here's my best shot:

1. U

2. XZ, VY

3. VU, WU

4. XY, ZY

5. ⊙U

6. XZ, VY (they are diameters but also intersect)

7. VY = 10 cm, WU = 5 cm

8. Diameter (of larger circle)

9. Diameter (of smaller circle)

10. Radius (of larger circle)

11. Radius (of smaller circle)

3 0
3 years ago
Write the missing exponent <br><br> 256 = <br><img src="https://tex.z-dn.net/?f=%20%7B%3F%7D%5E%7B4%7D%20" id="TexFormula1" titl
antiseptic1488 [7]

Answer:

4^4

Step-by-step explanation:

256\div4=64\div4=16\div4=4

4\times4\times4\times4=256

4^4=256

Hope this helps.

3 0
3 years ago
Other questions:
  • What is 16×500×60=? i need help
    10·1 answer
  • What is next number in pattern 125,-25,5,-1,
    11·1 answer
  • Help with these two
    10·1 answer
  • Select all the situations that can be modeled by the expression-80÷4. (multiple answers may be selected)
    6·1 answer
  • What is the sum of these mixed numbers 2 1/8 + 4 3/8
    6·1 answer
  • there are 810 calories in 3 scoops of vanilla ice scream. How many calories are there in 7 scoops of ice screams
    7·1 answer
  • Slope = 1; y-intercept = -4<br><br><br> Write the linear equation in slope intercept form
    8·1 answer
  • Quadrilateral IJKL is similar to quadrilateral MNOP. Find the measure of side NO. Round your answer to the nearest tenth.
    14·2 answers
  • The temperature in Columbus, Ohio, on Monday is 35 degrees warmer than it was on Sunday. Saturday's temperature was 7 degrees co
    12·1 answer
  • Solve √x+6+4=7<br> I need help solving this!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!