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
svet-max [94.6K]
3 years ago
10

Janelle has 5 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the

race and walking back the same distance to cool down. If she runs at a speed of 9 mph and walks back at a speed of 3 mph how long should she plan to spend walking back?
Mathematics
1 answer:
VikaD [51]3 years ago
6 0

Answer:

The distance cover by him walking back is 11.25 miles

Step-by-step explanation:

Given as :

Time for Janelle to spend on training = 5 hours

The  running speed of Janelle = 9 mph

The walking back with 3 mph

Let The distance for running and walking is same i.e  D miles

SO, Time = \frac{Distance}{Speed}

∴  5 =  \frac{D}{9} +  \frac{D}{3}

Or, 5 × 9 = D + 3 D

Or, 45 = 4 D

∴   D = \frac{45}{4} = 11.25 miles

Hence The distance cover by him walking back is 11.25 miles   Answer

You might be interested in
What value of k makes the statement true?<br> x² (2x³ + 7x²yª) = 2xªyª + 7x³y8?
Nina [5.8K]

By apply the distributive property of multiplication, the value of k which makes the statement true is 1.

<h3>What is the distribution property?</h3>

Mathematically, the distributive property of multiplication is given by tis expression:

x(y + z) = xy + xz.

Next, we would apply the distributive property of multiplication to the given equation by distributing to the left-hand side using xy⁴:

k(2x⁴y⁴ + 7x³y⁸) = 2x⁴y⁴ + 7x³y⁸

Dividing both sides by the common factor, we have:

k = (2x⁴y⁴ + 7x³y⁸)/(2x⁴y⁴ + 7x³y⁸)

k = 1.

In conclusion, the value of k which makes the statement true is 1.

Read more on distributive property here; brainly.com/question/2807928

#SPJ1

<u>Complete Question:</u>

What value of k makes the statement true?

x^ky⁴(2x³ + 7x²y⁴) = 2x⁴y⁴ + 7x³y⁸

5 0
2 years ago
PLEASE ANSWER THIS QUESTION RIGHT.V100
RideAnS [48]

Answer:

C

Step-by-step explanation:

I hope this helps :)

4 0
3 years ago
Read 2 more answers
What is the slope intercept form of the equation of the line that passes through the point (-6 ,1) and is perpendicular to the g
Elena-2011 [213]

Answer:

y-1 = 3/2(x+6)

Step-by-step explanation:

slope of equation is -2/3 so to make it perpendicular find the opposite reciprocal: 3/2, that's the new slope, plug in x and y

6 0
3 years ago
Read 2 more answers
The graph below represents the purchasing power of your
noname [10]
If the income is $2600 the purchasing power will be $2400 .this is shown on the diagram above
4 0
2 years ago
What is the average mass of all four inner planets in scientific notation in scientific notation
Snezhnost [94]
2,953.54 * 10^21 kg

https://www.quora.com/What-is-the-average-mass-of-the-rocky-planets-in-our-solar-system
6 0
3 years ago
Other questions:
  • Which is the equation of the axis of symmetry of the graph of y=-3(x-6)^2+5
    13·2 answers
  • Write out the first few terms of the series Summation from n equals 0 to infinity (StartFraction 2 Over 3 Superscript n EndFract
    5·1 answer
  • If ADB = 70°,
    14·1 answer
  • How do you estimate 2,641 x 9
    5·2 answers
  • Two coins are in a hat. The coins look alike, but one coin is fair (with probability 1/2 of Heads), while the other coin is bias
    11·1 answer
  • Which value of c will make the equation true?
    7·1 answer
  • HELP ALL MY POINTSwhich expression is equivilent to -6(-2/3+2x)
    13·2 answers
  • Find the value of x that makes the following equation true.<img src="https://tex.z-dn.net/?f=-%204x%20%2B%2026%20%3D%20-2" id="T
    6·2 answers
  • |-5| |-9| <br> is it greater, less than, or equal to<br> &lt;, &gt;, = ??!?!
    7·2 answers
  • Will give brainliest for right answer. Absurd answer will be reported.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!