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
Gnoma [55]
3 years ago
13

Two​ trains, Train A and Train​ B, weigh a total of 198 tons. Train A is heavier than Train B. The difference of their weights i

s 30 tons. What is the weight of each​ train?
Mathematics
1 answer:
slamgirl [31]3 years ago
7 0

Answer:

A: 114, B: 84

Step-by-step explanation:

Let A be weight of Train A, B be weight of Train B. Since A is heavier than B by 30 tons, A = B + 30. Since A + B = 198, you can substitute for A to get (B+30) + B = 198. Then simplify so 2B = 168 and B = 84.

Then plug B into A = B+30 to get A = 114.

You might be interested in
Describe how (2 cubed) (2 superscript negative 4) can be simplified. Multiply the bases and add the exponents. Then find the rec
charle [14.2K]

Add the exponents and keep the same base. Then reciprocal it and change the sign of the exponent. Then the value of the exponent expression is 0.5.

<h3>What is an exponent?</h3>

Exponential notation is the form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponent is a number or letter is called the base. It indicates that the base is to raise to a certain power. X is the base and n is the power.

The exponent expression is 2³ × 2⁻⁴ can be simplified.

Add the exponents and keep the same base. Then we have

2³ × 2⁻⁴  = 2⁽³⁻⁴⁾

2³ × 2⁻⁴  = 2⁻¹

Then find the reciprocal and change the sign of the exponent.

2^3* 2^{-4} = 2^{-1}\\\\2^3* 2^{-4} = \dfrac{1}{2}\\\\2^3* 2^{-4} = 0.5

The value is 0.5.

More about the exponent link is given below.

brainly.com/question/5497425

7 0
2 years ago
Help me please explain on how to do this
Leviafan [203]

Answer:

Easy

Step-by-step explanation:

To find the perimeter, add all the sides together.

12+16+20=48

To find the area, you multiply the sides that make the right angle of the triangle,

12×16=192

And divide it by two. This step is important as if you don't divide it by two, you will end up with the area of a square.

192÷2=96

Finito. Oh and don't forget to add units.

Cm for perimeter and Cm(squared) for area. :)

7 0
3 years ago
A rug is 12 feet wide and 15 1/2 feet long. What is the area of the rug?
fgiga [73]

Answer:

372 feet^2

Step-by-step explanation:

A=LW

A=(15 1/2)(12)=(31/2)(12)=(31/2)(24/2)=744/2=372

3 0
3 years ago
Name an equivalent ratio for with a denominator of 8.
const2013 [10]

Answer:

(A)

Step-by-step explanation:

4+4=8,4/8 is an equalivent ratio. So the best answer would be A!

Hope this helps:)!

6 0
3 years ago
ALGEBRA 1 HELP!!!!<br> •GIVING BRAINLIEST
pickupchik [31]
Amount= Deposit or initial amount ( 1+ percent increase) ^period of time
So Amount= 50(1+0.1)^3
= 50(1.1)^3
= 50(1.331)
=66.55
So she will have $66.55 in 3 years.
4 0
3 years ago
Other questions:
  • Please help, and show work, I need to understand. Thank you
    6·1 answer
  • It has one more vertex than an octagon and 2 fewer sides than a hendecagon what is the shape
    9·2 answers
  • Gcmf of 25x²y³+55xy³​
    6·2 answers
  • A landscaping company charges $50 per cubic yard of mulch plus a delivery charge of $24. Find a
    15·1 answer
  • Tony has an empty room in his house.The length of the room is 8ft. The width is 8ft,and the height is 10 feet.If he wants wallpa
    15·1 answer
  • Christine is riding her bicycle. She rides for 11.2 kilometers at a speed of 7 kilometers per hour. For how many hours does she
    10·1 answer
  • 3(x+6)=24 I need help to find x​
    9·2 answers
  • Last Friday Jacob had $28. Over the
    12·1 answer
  • Plz help ill give 15 points
    10·1 answer
  • I will brainlist who can answer this all pleaseeeeej​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!