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
Allisa [31]
3 years ago
6

Oliver and Lenny started hiking a hill simultaneously from the bottom to the top. Oliver hiked at a speed of 5 km/h during the f

irst half, then decreased his speed to 4 km/h during the second half. Lenny hiked at a speed of 4 km/h during the first half, then increased his speed to 5 km/h in the second half. Who reached the top of the hill first? What is the proportion of time he spent hiking to that of his friend?
Mathematics
1 answer:
Vilka [71]3 years ago
4 0

Answer:

<u>Oliver and Lenny reached the top of the hill at the same time</u>

<u>The proportion of time Oliver spent hiking to that of Lenny is 1:1</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Oliver's speed = 5 km/h during the first half, then decreased his speed to 4 km/h during the second half.

Lenny's speed = 4 km/h during the first half, then increased his speed to 5 km/h in the second half.

2. Who reached the top of the hill first? What is the proportion of time he spent hiking to that of his friend?

Let's assume the distance from the bottom to the top of the hill is 10 kilometers for calculating the time it will take Oliver and Lenny to reach the top of the hill:

Speed = Distance/Time

Time = Distance/Speed

Oliver = Time of hiking first 5 km + Time of hiking second 5 km

Lenny = Time of hiking first 5 km + Time of hiking second 5 km

Oliver = 5/5 + 5/4

Oliver = 1 + 5/4 = 2 1/4 hours

Lenny = 5/4 + 5/5

Lenny = 5/4 + 1 = 2 1/4 hours

<u>Oliver and Lenny reached the top of the hill at the same time</u>

<u>The proportion of time Oliver spent hiking to that of Lenny is 1:1</u>

You might be interested in
3/4 is 60% of what number
Mariana [72]
First change the fraction to percent. 
3/4 = 60%

Then change the percent to the decimal. 
60% = 0.75

Now multiply it.
<span>0.75 x 60% = 45
</span>
45 is the answer. 
3 0
3 years ago
How to solve 6x + y= -5, -6x + 12y=96 using elimination and does it have no solution or many solutions?
Alika [10]

Answer:

x = -2

Step-by-step explanation:

Arrange 6x + y= -5, -6x + 12y=96 vertically:

6x + y= -5

-6x + 12y=96       Now combine like terms:

--------------------

       13y = 91

Solving for y by dividing both sides by 13:  y = 7

Find x by substituting 7 for y in the second equation:  -6x + 12(7) = 96

Then -6x = -84 + 96, or:

-6x = 12, and so x = -2

8 0
2 years ago
Please help me. this is hard
allochka39001 [22]
Since it is a square that means each side is equal.
The perimeter is 24, and since there is four sides we would divide it by four to find the length of each side.

24/4 = 6

Each side is 6.
By looking at the picture, one side of the square, is the length of the radius.

The radius of the square is 6.

The only thing left to do is to find the circumference.
The circumference formulas are:

C = \pid
C = 2\pir

We can use the first one Diameter x pi (3.14)
To find the diameter we would just multiply the radius by two.

6 x 2 = 12

Diameter = 12

So multiply it by pi

12 x 3.14 = 37.68
or D 12\pi



7 0
3 years ago
What is the length of the missing side of this triangle?
N76 [4]

Answer:

The answer is B=10 and the top is called hypothenus

5 0
1 year ago
Read 2 more answers
URGENT- I'll give 20 points
egoroff_w [7]

Answer:

i think its c

Step-by-step explanation:

so sorry if its wrong

3 0
3 years ago
Other questions:
  • Which point is the midpoint of AE
    10·1 answer
  • Listed below are annual data for various years. The data are weights​ (metric tons) of imported lemons and car crash fatality ra
    10·1 answer
  • Gcf and lcm of 6 and 9
    9·1 answer
  • 96 ounces equals how many pounds
    12·1 answer
  • Simplify <br> -4x ^3 y ^2(7xy ^4)
    10·1 answer
  • HELPPP MEE THANK U, 20 POINTS!~
    7·1 answer
  • Find the length segment AB if A(-1,7) and B(11,-1) (Round to 1 decimal place)
    10·1 answer
  • You basically look at the bar graph on the right and see which statement is true. Brainliest and thank you!
    15·1 answer
  • What is 1 into 23 * 100 in percentage ​
    5·1 answer
  • Simplify this expression:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!