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
hichkok12 [17]
3 years ago
10

It takes a ship 3 hours to cover 72 km with the current and 4 hours against the current. Find the speed of the ship in still wat

er and the speed of the current.
Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
7 0

Answer:

21 and 3

Step-by-step explanation:

earnstyle [38]3 years ago
5 0
X- speed of the ship in still water
a- speed of current
(x+a)- speed with current
(x-a) - speed against current

(x+a)*3=72
(x-a)*4=72

      x+a=24
<u>+    x-a=18
</u>    2x    =42
      x = 21

x+a=24,    21+a=24,    a=3

The speed of the ship in still water = 21 km/h, 
the  speed of the current =3 km/h.
You might be interested in
HELP ME WITH THIS PLEASE!!!!
Vlada [557]

The answer is left two places.

For example 5.% would be 0.05 as a decimal.

5 0
4 years ago
Need help plz <br> How do you do this?
gavmur [86]

Answer:

See description below.

Step-by-step explanation:

A distance -time graph of Maria's journey would look like a very steep line with slope 100 meters/1 minute until minute 4. At minute 4, Maria stopped to talk so it would like a horizontal flat line at that same distance for 3 minutes. This means at minute 7, Maria began walking again. From minute 7 on would be a positive line heading up with a slope of 75 meters/ 1 minute.

3 0
3 years ago
Find the distance for d
antiseptic1488 [7]

Answer:

320 i think

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
It's question B as I've done A please help
Hatshy [7]
Its easy.use cos rule.
4 0
4 years ago
Let f(x) = 12 over the quantity of 4 x + 2 . Find f(−1). (1 point) a −6b −2c 2d 6
antoniya [11.8K]

Answer:

f(-1) = -6

Step-by-step explanation:

f(x) = 12 / ( 4x+2)

Let x = -1

f(-1) = 12 / ( 4*-1+2)

     = 12 / (-4+2)

     = 12 / -2

    = -6

5 0
4 years ago
Other questions:
  • Evaluate z+z+z for x =2,y=-3,z=4​
    14·1 answer
  • Can you answer this question please
    12·2 answers
  • 2. El cociente de 15 y un número.
    9·1 answer
  • A line passes through (-1,7) and (2,10) which answer is the equation of the line
    7·1 answer
  • Solve the system of equations algebraically
    15·1 answer
  • How do you solve 270 divided by 3.5
    13·2 answers
  • F (x) = -(x + 1)<br> What is the y intercept
    7·1 answer
  • Any late night peeps still awake?
    6·1 answer
  • Order the following numbers from smallest to largest?
    15·2 answers
  • (1.1)What is the notation for line BC"?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!