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
Marina86 [1]
3 years ago
14

Please Help!

Mathematics
1 answer:
Flura [38]3 years ago
8 0
Let x be the length of the train.

On the basis of the observer;
Speed of the train = x/6

On the basis of the bridge;
Total distance covered by any point of the train= 350+x
Speed = (350+x)/20

Equating the two expressions of speed;
x/6 = (350+x)/20
20(x) = 6(350+x)
20x = 2100+6x
(20-6)x = 2100
14x = 2100
x= 2100/14 = 150 m
Speed = x/6 = (350+x)/20 = 150/6 = 500/20 = 25 m/s.

Therefore,
Length of train = 150 m
Speed of train = 25 m/s
You might be interested in
Help I will give brainliest
natta225 [31]
I think it’s A i’m not 100% sure tho ❤️
7 0
3 years ago
Write 75 degrees in full form
swat32
75 degrees in full form is 108/5 degrees
4 0
3 years ago
Read 2 more answers
Need to know the v value
marysya [2.9K]

Answer:

V = -5

Step-by-step explanation:

As the paper says, V = m - k.

If you subtract -7 - -2 you get -5 (negative 5)

Hope this helps ^^

6 0
3 years ago
How can you identify the different type of solutions to one-variable equations?
Pie

Answer:

An equation like 2x + 3 = 7 is a simple type called a linear equation in one ... There are other types of equations, however, that can have several solutions. ... to solve an equation algebraically and you end up with an obvious identity (like 3 = 3)

Step-by-step explanation:

7 0
3 years ago
Help due soon plss!!!!
Gelneren [198K]

Answer:

Cube=150cm^2

Triangular Prism=228ft^2

Step-by-step explanation:

Cube

A=6a^2=6*5^2=150cm^2

Triangular prism

Using these formulas

A=2A_{B}+(a+b+c)h\\A_{B} =\sqrt{s(s*a)(s*b)(s*c)} \\s=\frac{a+b+c}{2}

Solving for A

A=ah+bh+ch+\frac{1}{2} \sqrt{-a^4+2(ab)^2+2(ac)^2-b^4+2(bc)^2-c^4} \\=6.5*11+5*11+6.5*11+\frac{1}{2} *\sqrt{-6.5^4+2*(6.5*5)^2+2*(6.5*6.5)^2-5^4+2*(5*6.5)^2-6.5^4} \\=228ft^2

5 0
3 years ago
Other questions:
  • How many pints are in 13 quarts?
    11·2 answers
  • duncan typed 3,528 words in 21 minutes. Let w represent the words typed each minute, If Duncan typed the same number of words ea
    15·1 answer
  • Help with all please help!!!!! 11 points!!!!
    9·1 answer
  • Please answer me at least one question.
    9·1 answer
  • RATIOS MY WORST ENEMY HELP!!! IM SO LOST
    13·1 answer
  • How do i convert 4.5 meters into cm
    5·1 answer
  • An initial investment is $14939
    13·1 answer
  • Find the radius of the button. the button: 3.5 inches
    6·1 answer
  • Write your answer in standard form 25x +20​
    5·1 answer
  • The rule for the number pattern is to add 56<br> 411,___,___,___
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!