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
nikitadnepr [17]
3 years ago
12

Two airplanes leave an airport at the same time, flying in the same direction. One plane is flying at twice the speed of the oth

er. If after 4 hours they are 1800 km apart, find the speed of each plane.
Mathematics
1 answer:
Vsevolod [243]3 years ago
7 0

Answer:

The slower plane has a speed of 450 km/h and the faster one has a speed of 900 km/h.

Step-by-step explanation:

Two planes:

The first one's speed is x

The second is y.

One plane is flying at twice the speed of the other.

I will say that y = 2x.

Two airplanes leave an airport at the same time, flying in the same direction

Same direction, so their relative speed is the subtraction of their speeds. 2x - x = x.

Means that after 1 hour, they will be x miles apart.

If after 4 hours they are 1800 km apart, find the speed of each plane

After 1 hour, x km apart. After 4, 1800. So

1 hour - x km apart

4 hours - 1800 km apart

4x = 1800

x = 1800/4

x = 450

2x = 2*450 = 900

The slower plane has a speed of 450 km/h and the faster one has a speed of 900 km/h.

You might be interested in
F(x)=16x^4-81=0 select all zeros of the function !!!
atroni [7]

Answer:

3/2, -3/2, (if it is asking for imaginary solutions as well then 3i/2 and -3i/2)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help please. 10 points yall.
vitfil [10]
A.) 2a+6b

Explanation:
multiply each term in parentheses by 2
2a+2x+3b
calculate the product
2a+6b
3 0
3 years ago
Each class at Briarwood elementary collected at least 54 cans of food during the food drive. If there are 29 classes in the scho
kirill115 [55]
1566 cans with all cans combined
5 0
3 years ago
Read 2 more answers
Jimmy is going scuba diving. He started at 10 ft below sea level. He then dove 15 ft further, then he got nervous and came up 5
ad-work [718]

Answer:

it is 55

Step-by-step explanation:

8 0
3 years ago
The Library is having a book sale. Hardcover books sell for $4 each, and paperbacks sell for $2 each. If Connie spent $26 on 8 b
LenKa [72]

If Connie spent $26 on 8 books, The number of hard covers she buy is 5 hard cover.

<h3>Number of hardcover bought</h3>

Let h represent hard cover

Let p represent paperbacks

Formulate an equation

h + p= 8.......(1)

4h + 2p= 26......(2)

Multiply equation (1) by -2

-2h + -2p = -16

<u> 4h  +  2p   = 26</u>

2h  +   0p =10

2h = 10

Divide both side by 2h

h=10/2

h =5 hard covers

Paper backs

P=5-2

P=3 paper backs

Therefore If Connie spent $26 on 8 books, The number of hard covers she buy is 5 hard cover.

Learn more about Number of hardcover bought here:brainly.com/question/18306224

#SPJ1

6 0
1 year ago
Other questions:
  • Given that a couple decides to have 3 children, none of them adopted. <br> Find sample space s.
    6·1 answer
  • The diameter of a bacteria colony that doubles every hour is represented by the graph below. what is the diameter of the bacteri
    15·2 answers
  • A business bought a lot of 2,500 lamps for 50,000 dollars and wants to sell them at 15 percent profit how much should each lamp
    7·1 answer
  • Compare 4 x 10^6 and 2 x 10^7.
    7·1 answer
  • What is 157% in a Fraction
    12·2 answers
  • Can someone help me with this
    10·1 answer
  • Michelle has 18.9 yards of string. She cuts the string into 5 pieces of equal length.
    11·2 answers
  • |2x-8| + 3 = 5 two solutions
    12·1 answer
  • Which value from the set {3,10,90,108} will make the equation 3x + 3 = 33 true ?
    15·1 answer
  • Help please!<br><br> Find the length of AB:
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!