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
Find all the real cube roots of -343.
andre [41]

The Cube Root Of -343 is ( -7)

7 0
2 years ago
Read 2 more answers
PLS HELP ASAP PLZ PLZ PLZ
KIM [24]
I am unsure about the very last problem but I can help with the first two

1) (y+1)+4

If we combine the numbers 1 and 4, we get +5 and can isolate the numbers from the variable.

This would give us

y + 5 =

2) (6*r)*7

remember that we do not have to explicitly state 6*r

Instead, we can write it as 6r

this helps us get rid of the parentheses

now we can write it as 6r * 7=

I hope this helps!:)

6 0
2 years ago
PLEASE HELP ASAP!!!!!!!!!!!<br> APPRECIATED
Juli2301 [7.4K]

Answer:

6

Step-by-step explanation:

5 0
2 years ago
If KM = 32 units, KL = 3x+6 and LM= 11 units, what is the value of x?
Rus_ich [418]

Answer:

<h2>x = 5</h2>

Step-by-step explanation:

|<------------------- 32 units ---------------->|

K-----------------------L-------------------------M

           3x + 6                    11

KL + LM = KM

3x + 6 + 11 = 32

3x = 32 - 11 - 6

x = 15 / 3

x = 5 units

7 0
3 years ago
Ms. Carlson has $7,145.Ms.lee has $3.799
ElenaW [278]
Okay well Ms. Carlson has more money than Ms. Lee, about $7,142.2 more than her. PART A ANSWER: Ms. Carlson. Together they have $7,148.799. to estimate it to the closest tens it would be $7,150. PART B ANSWER:$7,150
4 0
2 years ago
Other questions:
  • Plz Help. Brainiest will be marked. And can you show workings
    13·2 answers
  • What is 2(9x-1)+7(x+6)=-60
    8·1 answer
  • Can someone please help thank you
    15·1 answer
  • What times what will give m the answer 64
    10·2 answers
  • Help me plz... thanks
    5·2 answers
  • Reflections over the X- Axis P(x,y)=
    12·1 answer
  • What is the area of this shape? Explain why?
    5·1 answer
  • Please solve this problem. Thnaks(3x-4)²
    5·2 answers
  • Identify the mean of each distribution.
    9·2 answers
  • Help, please !! you will get 10 points !!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!