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
Alexxandr [17]
4 years ago
15

A light-rail commuter train accelerates at a rate of 1.35 m/s2 . how long does it take to reach its top speed of 80.0 km/h, star

ting from rest?
Mathematics
1 answer:
aalyn [17]4 years ago
4 0
To answer this question, you need to convert the km/hour unit into m/s2 so it can be divided by the train acceleration rate. The calculation would be: 80 km/hour * 1000m/km * 1hour/3600second= 22.22m/s.

If the initial speed is zero, then the time needed for the train to reach that speed is: (22.22m/s) /(1.35m/s2)= 16.46 second

You might be interested in
set the equation up for "Eight less than the square of a number is the same as adding the number and four"
TEA [102]
X^2-8 = x+4 is your answer!
5 0
4 years ago
WIll give brainliest Use the information given to answer the question.
MaRussiya [10]

Answer:

x²-12x+36

Step-by-step explanation:

an expression in the form (a-b)² is expanded to the form a²-2ab+b²

you can also expand it to (x-6)×(x-6) then multiply the first term by the first the outer term by the outer term the inner term by the inner term and the last term by the last term (foil)

the first terms are x and x = x² the outer terms are x and -6 = -6x the inner terms are also x and -6 = -6x

the last terms are 6 and 6 = 36

adding all the four products =

x²-12x+36

7 0
3 years ago
The summit charges $4 fee and $3 per hour to rent a kayak. Extreme Paddling charges a $5 fee and $2 per hour to rent a kayak. Wr
djverab [1.8K]

Answer:

The answer would be S=4x+3y and E=5x+2y

7 0
3 years ago
(2a+9b-7).(-8)=help​
musickatia [10]

Answer:

(-16a)-72b+56

Step-by-step explanation:

Multiply 8 to each number

Hope this helped :)

4 0
3 years ago
Read 2 more answers
Heyyyyyy , Can you please help me with this
erik [133]

Answer:

19 houses

Step-by-step explanation:

90*(2/5)=36

90-36=54

54*(2/3)=37

54-37=19

8 0
3 years ago
Other questions:
  • A fair number cube with
    11·1 answer
  • I really need help with #1 a and b
    5·1 answer
  • Find the first partial derivatives of the function f(x,y,z)=4xsin(y−z)
    5·1 answer
  • I need help please with this question
    11·1 answer
  • $12.59 for dog food and $4.75 for shampoo what how much did the dog food cost than the shampoo
    8·2 answers
  • (-14] + 14 =<br> What is the answer for that
    9·2 answers
  • Sara sold half her comic books and then brought 9 more.She now has 15.
    14·1 answer
  • Can U solve this?!<br><br> No Improper answers!
    6·2 answers
  • Find the value of X.<br><br> Need Help
    10·1 answer
  • What is the slope of the line?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!