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
allochka39001 [22]
3 years ago
5

It takes 32 hours for a motorboat moving downriver to get from pier A to pier B. The return journey takes 48 hours. How long doe

s it take an unpowered raft to cover this distance?
Mathematics
2 answers:
dalvyx [7]3 years ago
7 0

Answer:

The answer is 192 hours

Step-by-step explanation:

lina2011 [118]3 years ago
3 0

Answer:

Time taken by the un powered raft to cover this distance is T = 192.12 hr

Step-by-step explanation:

Let speed of boat = u \frac{km}{hr}

Speed of current = v \frac{km}{hr}

Let distance between A & B = 100 km

Time taken in downstream = 32 hours

32 = \frac{100}{u +v}

u + v = \frac{100}{32}

u + v = 3.125 ------ (1)

Time taken in upstream = 48 hours

48 = \frac{100}{u -v}

u -v = \frac{100}{48}

u - v = 2.084 ------- (2)

By solving equation (1) & (2)

u = 2.6045 \frac{km}{hr}

v = 0.5205 \frac{km}{hr}

Now the time taken by the un powered raft to cover this distance

T = \frac{100}{v}

Because un powered raft travel with the speed of the current.

T = \frac{100}{0.5205}

T = 192.12 hr

Therefore the  time taken by the un powered raft to cover this distance is

T = 192.12 hr

You might be interested in
If one person recruits five people and each recruited person recruits 5 more, and so on, 15 cycles; how many people would that b
jek_recluse [69]

Answer:

y=5^x

5^15= 30517578125 people

Step-by-step explanation:

x=# of cycles= 15 cycles

y= #of people recruited = what we're figuring out

Plug in 15 for x in the equation y=5^x

y= 5^15= 30517578125 people

3 0
3 years ago
Explain why the square root of 64 has a positive and negative value.​
weeeeeb [17]

Since the square root of 64 is 8, 8 has an absolute value, so it can be opposites as it, eg. 8 = -8.

7 0
3 years ago
Find the surface area of the rectangular prisms given the dimensions 4x3x2
earnstyle [38]

Answer:

so your answer is 52!!!

Step-by-step explanation:

Surface area is 2*l*h+2*l*w+2*w*h

Hope this helps

Pls mark brainleist

Thanks!!

3 0
2 years ago
Select the correct answer.
V125BC [204]

Answer:

R(x) = x + 9

Step-by-step explanation:

R(x) = x + 9 shifts the graph up 9 units.

6 0
3 years ago
Look st the picture.
ser-zykov [4K]

Answer:

65 is ur answer

Step-by-step explanation:

by using pythagoras theorem we can get it

8 0
2 years ago
Read 2 more answers
Other questions:
  • Which system of inequalities is shown here? Help me ASAP please):
    13·2 answers
  • Please could someone help me ?
    5·1 answer
  • Which of the following employees has the latest gross pay
    6·1 answer
  • You have 800 square feet of the room reserved for tables
    6·1 answer
  • Which sample size out of a population of 1,000 is most likely to lead to a valid conclusion?
    8·2 answers
  • 50 point if u due right plzzz
    14·1 answer
  • Solve the equation by completing the square-x^2-14x+24=0
    13·2 answers
  • A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for
    6·1 answer
  • A tennis player keeps track of the number of successful first serves he makes. During the first 8 service points of a game, only
    15·1 answer
  • ᕼEᒪᑭ ᗩᔕᗩᑭ <br> TᕼE ᗷEᔕT E᙭ᑭᒪᗩIᑎEᗪ ᗩᑎᔕᗯEᖇ ᗯIᒪᒪ GET ᑕᖇOᗯᑎ
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!