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
dezoksy [38]
3 years ago
13

  Two​ trains, Train A and Train​ B, weigh a total of 207 tons. Train A is heavier than Train B. The difference of their weights

is 81 tons. What is the weight of train A and B?
Mathematics
1 answer:
-BARSIC- [3]3 years ago
5 0

Answer:

A) 184.5 B)22.5

Step-by-step explanation:

207/2= 103.5

A is heavierand the diference of their weights is 81 tons A is 103.5 plus 81 tons or 184.5

And B is 103.5 minus 81 tons or 22.5 tons

You might be interested in
Which statement best reflects the solution(s) of the equation?
Inessa [10]

x=2 is only solution while x=1 is extraneous solution

Option C is correct.

Step-by-step explanation:

We need to solve the equation \frac{1}{x-1}+\frac{2}{x}=\frac{x}{x-1} and find values of x.

Solving:

Find the LCM of denominators x-1,x and x-1. The LCM is x(x-1)

Multiply the entire equation with x(x-1)

\frac{1}{x-1}+\frac{2}{x}=\frac{x}{x-1}\\\frac{1}{x-1}*x(x-1)+\frac{2}{x}*x(x-1)=\frac{x}{x-1}*x(x-1)\\Cancelling\,\,out\,\,the\,\,same\,\,terms:\\x+2(x-1)=x^2\\x+2x-2=x^2\\3x-2=x^2\\x^2-3x+2=0

Now, factoring the term:

x^2-2x-x+2=0\\x(x-2)-1(x-2)=0\\(x-1)(x-2)=0\\x-1=0\,\,and\,\, x-2=0\\x=1\,\,and\,\, x=2

The values of x are x=1 and x=2

Checking for extraneous roots:

Extraneous roots: The root that is the solution of the equation but when we put it in the equation the answer turns out not to be right.

If we put x=1 in the equation, \frac{1}{x-1}+\frac{2}{x}=\frac{x}{x-1}  the denominator becomes zero i.e

\frac{1}{1-1}+\frac{2}{1}=\frac{1}{1-1}\\\frac{1}{0}+2=\frac{1}{0}

which is not correct as in fraction anything divided by zero is undefined. So, x=1 is an extraneous solution.

If we put x=2  in the equation,

\frac{1}{x-1}+\frac{2}{x}=\frac{x}{x-1}

\frac{1}{2-1}+\frac{2}{2}=\frac{2}{2-1}\\\frac{1}{1}+1=\frac{2}{1}\\1+1=2\\2=2

So, x=2 is only solution while x=1 is extraneous solution

Option C is correct.

Keywords: Solving Equations and checking extraneous solution

Learn more about Solving Equations and checking extraneous solution at:

  • brainly.com/question/1626495
  • brainly.com/question/2959656
  • brainly.com/question/2456302

#learnwithBrainly

5 0
3 years ago
There are five consecutive even integers. The sum of the first two is thirty-six less than the sum of the last three numbers. Wh
Norma-Jean [14]
5 consecutive even integers: 2n, 2n+2, 2n+4, 2n+6, 2n+8 for any integer n The sum of the two smallest of five consecutive even integers is 50 less than the sum of the other three integers: 2n + 2n+2 = 2n+4 + 2n+6 + 2n+8 - 504n + 2 = 6n -3234 = 2nn = 17 <span>The smallest integer in our sequence is 2n = 2*17 = 34</span> Check:2n + 2n+2 = 2n+4 + 2n+6 + 2n+8 - 5034 + 36 = 38 + 40 + 42 - 5070 = 120 - 5070 = 70
6 0
3 years ago
What is the number of liters in 90 gallons
erma4kov [3.2K]
The answer is 340.687 liters

6 0
3 years ago
HELP!
Klio2033 [76]
It’s 50/50 hope this helps
4 0
3 years ago
Read 2 more answers
How many anagrams are there to the word FRIDAY? In how many of these do the letters 'DAY' appear consecutively? (Disregard wheth
QveST [7]

There are 720 total different combinations, and 24 of those will have the letters DAY consecutively within all those combinations.

<u>Explanation:</u>

FRIDAY is a six letter word.

To form all combinations of letters, we would have six choices of letters to fill the first spot. Whatever letter you choose for the first spot, you then have five choices of letters to fill the second spot. Four choices of letters to fill the third spot. And so on.

So, the total number of different combinations of the six letters would be 6!

6! = 6 X 5 X 4 X 3 X 2 X 1

   = 720

DAY could appear consecutively starting in 4 different spots: the 1st, 2nd, 3rd, and 4th spots of all combinations. DAY will appear consecutively 6 times in each of those 4 starting spots.

6 X 4 = 24.

So, there are 720 total different combinations, and 24 of those will have the letters DAY consecutively within all those combinations.

7 0
3 years ago
Other questions:
  • The measure of an angle is 28 greater than its complement. Find the measure of each angle.
    12·1 answer
  • Explain how you can use the triangle sum theorem to find the measures of the angles of an equilateral triangle
    14·1 answer
  • Is the term (X + 2) a factor of the polynomial shown below?
    11·1 answer
  • 64 is 66 2/3% of what number
    6·2 answers
  • What’s the answer to this ?
    8·2 answers
  • 4. A substantial snowstorm is hitting the Northeast region and is predicted to snow at a rate of 2 inches per
    5·1 answer
  • Find the solutions of the quadratic equation 7? - 2c +3 = 0.
    12·1 answer
  • I need help with how to do this, the way it's worded is confusing me and I need this done by tomorrow.
    8·1 answer
  • What is the cube root of -216 end root
    12·2 answers
  • Calculate the following scenario for a simple interest loan.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!