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
asambeis [7]
2 years ago
14

Two trains leave towns 471 miles apart at the same time and travel toward each other. One train travels 21 miles per hour slower

than the other. If they meet in 3 hours, what is the rate of each train?.
Mathematics
1 answer:
nadya68 [22]2 years ago
7 0

Let the slower train's velocity be x-21

Let the faster train's velocity be x

We know that the approach speed is the sum of both speeds, so x+x -21= 2x-21.

The approach rate is given by Distance/time = 471/3 = 157mpH

x+x-21=157

2x=157+21

2x=178

x=89mph

The slower train is travelling 89-21 = 68mph

The faster train is travelling 89mph.

You might be interested in
To practice for a competition, Kate swam 710 meters in the pool each day for 3 weeks. How many kilometers did Kate swim in those
gayaneshka [121]

Answer:

14910 meters

Step-by-step explanation:

3 weeks= 21 days

each day= 710 m

21 days= 710*21

21 days= 14910 m

8 0
2 years ago
Which of the following expressions is equivalent to the expression a^2/3
vladimir1956 [14]

∛a² → C

From the ' law of exponents '

a^{\frac{m}{n} } = \sqrt[n]{a^{m} }


3 0
3 years ago
OH GOD PLEASE HELP ME MY BRAIN HURTS!
alukav5142 [94]
Your answer should be 71. :)
8 0
3 years ago
What is the value of X ?
umka21 [38]

Answer:

15 because its 15j hvyb

7 0
4 years ago
Nicole has 17 nickels n and dimes d. If the value of her coins is $1.30, how many of each coin does she have?
denis-greek [22]

Answer:

  8 nickels and 9 dimes

Step-by-step explanation:

If all were dimes, the value would be $1.70. It is $0.40 less than that. Changing a dime for a nickel reduces the value by $0.05, so there must have been $0.40/$0.05 = 8 such changes.

There are 8 nickels and 9 dimes.

_____

<em>Check</em>

8 · 0.05 + 9 · 0.10 = 0.40 + 0.90 = 1.30 . . . the answer checks OK

7 0
4 years ago
Other questions:
  • What is the distance between the points (2,5) and (2,2) on the coordinate plane? HELP ASAP I WILL GIVE YOU BRAINLIST!♡
    11·1 answer
  • Kathleen had a bag of candy-coated chocolates. Of the 55 candies in the bag, 20% were red, 30% were orange, 30% were green, and
    15·2 answers
  • If your annual salary is 24700 what is your monthly salary
    6·2 answers
  • Nathaniel misses 10% of the free throws he attempts in a season. How many total free throws did he attempt if he missed 61?​
    15·1 answer
  • Suppose your SAT score is 1180. You look up the average SAT scores for
    5·1 answer
  • Write the complex number in the form a + bi. 6(cos 330° + i sin 330°) -3square root of three - 3i -3square root of three + 3i 3s
    15·1 answer
  • ANSWER THIS ASAP PLS <br><br> Which of the following must be true if ABD = CDB?
    11·1 answer
  • Solve for x, where x is a real number.<br> 10+ x + 3 =4
    10·2 answers
  • Somebody please help me with this​
    15·1 answer
  • Find the volume of the pyramid. Round to the nearest tenth if necessary. PLEASE HELP!!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!