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
notsponge [240]
3 years ago
14

Every train carriage has 4 doors how many doors will the train have if there are 7 carriages

Mathematics
2 answers:
s2008m [1.1K]3 years ago
5 0

Answer: 28

Step-by-step explanation:

4*7=28

lianna [129]3 years ago
5 0

First write down the unit ratio that is involved.

In this case, it's <em>train carriage/doors</em>.

Next, we set up our proportion.

We know that for every train carriage, there are 4 doors.

So we have 1/4.

We are asked how many doors will there be is there are 7 carriages.

So we have 7/x.

The 7 must go on the top because our unit ratio says

that we must put train carriage/doors.

So we have 1/4 = 7/x.

Solving from here, we use the means-extremes property.

This states that the product of the extremes, (1)(x),

equals the product of the means, (4)(7).

So we have 1x = 28 or just x = 28.

This means that for 7 carriages, there are 28 doors.

You might be interested in
What two numbers multiply to give you 6 and add up to give you negative 7
Bad White [126]

Answer:

-1 and -6

Step-by-step explanation:

-1x-6=6

-1+-6=-7

8 0
3 years ago
427 thousand as a scientic notation ​
Lerok [7]

Answer:

427,000 = 4.27 * 10^{5}

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the slope of a line perpendicular to the line whose equation is 6x+2y=−32. Fully simplify your answer.
Reika [66]

The slope of the line that is perpendicular to 6x + 2y = -32 is: 1/3.

<h3>What is the Slope of Perpendicular Lines?</h3>

The slope of two lines that are perpendicular to each other will always have a product that is equal to -1, which means that their slopes are negative reciprocals to each other.

Rewrite 6x + 2y = -32 in slope-intercept form:

2y = -6x - 32

2y/2 = -6x/2 - 32/2

y = -3x - 16

The slope is -3. Negative reciprocal of -3 is 1/3.

Therefore, the slope of the perpendicular line would be: 1/3.

Learn more about the slope of perpendicular lines on:

brainly.com/question/1362601

#SPJ1

5 0
1 year ago
7.2x14.3 what is that?
Galina-37 [17]

Answer:

102.96

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Y = – 3
KonstantinChe [14]

The  best approximation for the solution to this system of equations is (-2.2,-3)

Option C is correct.

Step-by-step explanation:

Solving the system of equations to get the exact value of x:

y = -3\\y = x-0.8

Let

y = -3\,\,eq(1)\\y = x-0.8\,\,eq(2)

Putting value of y from eq(1) into eq(2)

-3=x-0.8

x=-3+0.8

x=-2.2

So, Value of x is -2.2

The  best approximation for the solution to this system of equations is:

x=-2.2 and y = -3

(-2.2,-3)

Option C is correct.

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

6 0
3 years ago
Read 2 more answers
Other questions:
  • If nell works 3/4 of an hour on Monday and 6/10 of an hour on Tuesday, how much time will she work altogether?
    10·2 answers
  • the total weight w in pounds of a tractor trailer capable of carrying 8 cars depends on the number of cars c on the trailer.
    13·1 answer
  • Thomas earns x dollars each week walking his neighbor’s dog. He also earns $10 allowance each week. Which expression represents
    5·1 answer
  • What is a vertex ( coordinates )
    8·2 answers
  • PLEASE HELP!! WILL GIVE BRAINLIEST!
    8·1 answer
  • The following graph shows the relationship established by a car dealership between the sale price of a particular car model and
    14·2 answers
  • suppose Julie makes 80% of her free throws. what is the probability that she will make 20 of her next 30 attempts? ​
    14·1 answer
  • Give the degree of each polynomial
    8·2 answers
  • Abc or d please help me!
    15·2 answers
  • Find the area of a regular
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!