A train goes past you in 10 seconds and goes past a 100 meter long bridge in 30 seconds. What is the length (in meters) and the speed (in m/s) of the train?

Answers

Answer 1
Final answer:

To find the length of the train and its speed, we can use the formula Length = Speed x Time. By setting up and solving equations, we can find that the length of the train is 200 meters and the speed of the train is 20 m/s.

Explanation:

To find the length of the train, we can use the formula:

Length = Speed x Time

Given that the train takes 10 seconds to pass you and 30 seconds to pass the bridge, we can calculate:

Length of train = Speed of train x Time taken to pass you = Speed x 10

Length of train + Length of bridge = Speed of train x Time taken to pass the bridge = Speed x 30

Substituting the values, we have:

Speed x 10 + 100 = Speed x 30

Simplifying the equation, we get:

Speed = 400/20 = 20 m/s

Substituting the value of speed back into the first equation, we have:

Length of train = 20 x 10 = 200 meters

Therefore, the length of the train is 200 meters and the speed of the train is 20 m/s.


Related Questions

Jason has a bag of tiles with the letters from the word IMPOSSIBLE. He pulls a random tile out of the bag. Which outcomes are more likely than not?

Answers

Involves calculating probabilities of drawing marbles from a bag. Simply put, probability is the likelihood that something will occur. When we're not sure how something will turn out, we can discuss the likelihood of different outcomes, or their probabilities. Statistics is the study of events that follow a probability distribution. This problem requires the usage of probability.

The outcomes more likely than not when drawing two marbles from the bag without replacement:

Pulling a yellow marble then a green marble (Probability calculation: (2/9) * (4/8) = 1/9)

Pulling a green marble then a yellow marble (Probability calculation: (4/9) * (2/8) = 1/9)

There are 9 tiles in total. With 'P' appearing twice, the chance of drawing 'P' (2/9) is more than 50%, making it more likely than not.

let's break it down step by step.

First, let's find out how many tiles there are for each letter:

- I: 1

- M: 1

- P: 2

- O: 1

- S: 1

- B: 1

- L: 1

- E: 1

Total number of tiles = 1 (I) + 1 (M) + 2 (P) + 1 (O) + 1 (S) + 1 (B) + 1 (L) + 1 (E) = 9 tiles

Now, let's find out the probability of each letter being drawn:

- Probability of drawing I: 1/9

- Probability of drawing M: 1/9

- Probability of drawing P: 2/9

- Probability of drawing O: 1/9

- Probability of drawing S: 1/9

- Probability of drawing B: 1/9

- Probability of drawing L: 1/9

- Probability of drawing E: 1/9

Now, let's calculate the probability of drawing a letter that appears more than once.

In this case, the letter 'P' appears twice. So, the probability of drawing a 'P' is 2/9.

Now, let's determine which outcomes are more likely than not.

The probability of an event being more likely than not is greater than 50%.

From our calculations, the probability of drawing 'P' (2/9) is greater than 50%, making it more likely than not to draw 'P'.

Thus, the outcome of drawing 'P' is more likely than not.

If $1 US Dollars is equivalent to .1278 chinese yuan, convert $13,000 to yuan

Answers

Answer:

1661.4

Step-by-step explanation:

13000 x 0.1278=1661.4

If $1 US Dollars is equivalent to .1278 Chinese yuan, converting $13,000 to yuan gives us: 1,661.4 yuan

How to carry out currency conversion?

A currency's exchange rate is defined as the value of one currency in relation to another currency,

We are told that the exchange rate is expressed as:

$1 US Dollars is equivalent to 0.1278 chinese yuan

We can rewrite this as:

0.1278 chinese yuan =  $1 US Dollars

Thus:

$13000 = (13000 * 0.1278)/1

= 1,661.4 yuan

Read more about Currency Conversion at: https://brainly.com/question/17906368

#SPJ2

Select all the correct answers.
Which statements are true about the x-intercepts of quadratic functions?
An x-intercept of a quadratic function is also called a zero of the function.
All quadratic functions have exactly one x-intercept.
An x-intercept is located at the point on the function where the value of x is 0.
If x= a is an x-intercept of a quadratic function, then (x + a) is a factor of the functi
A quadratic function can have up to two x-intercepts.
Submit

Answers

X is a zero
There can be more than one zero
The third one is true
And yes there can be up to 2

For the statements option, A and E is correct about the x-intercepts of quadratic functions.

What is a quadratic function?

A polynomial function that has one or more variables and a variable having a maximum exponent of two is said to be quadratic. It is also known as the polynomial of degree 2 since the second-degree term is the greatest degree term in a quadratic function. At least one term in a quadratic function must be of the second degree. It has algebraic properties.

Given statements about  the x-intercepts of quadratic functions,

the expression of a quadratic function is given by,

ax² + bx + c = 0

the values of x are the zeroes of the quadratic functions, which is also known as the x-intercept.

since the degree of the polynomial is 2 so there will be at least two values for the x-intercept.

the x-intercept is the point on the x coordinate where the value of y is zero.

and let x = a be an x-intercept so the factor of function is (x - a).

Hence options A and E are correct.

Learn more about quadratic function;

https://brainly.com/question/18958913

#SPJ5

(20 POINTS)How to find it and what the answer is I need it by 1/27/2020 8:30PM

Answers

Answer:

13

Step-by-step explanation:

It's a famous "triple" for triangle lengths.

It's helpful to memorize: 5, 12, 13.

It works because of the reliable pythagorean theorem:

[tex]a^{2} + b^{2} = c^{2}[/tex]

[tex]5^{2} + 12^{2} = 13^{2}[/tex]

Answer:

The missing side length is 13

Step-by-step explanation:

Use Pythagorean Theorem

5 squared + 12 squared = x squared

25 + 144 = x squared

169 = x squared

13 = x

HELP ME ASAP I NEED TO KNOW LOL

Answers

Answer:

The range would be (-infinity,infinity)

Step-by-step explanation:

Range is the y values. And the y values are going up and down forever to infinity and negative infinity

The general term for the sequence 3/4,6/5,9/6,12/7,15/8

A. n+3/n+1

B. 3n/3+n

C. 3n/n+1

Answers

Answer:

B . [tex]\frac{3 n}{n+3}[/tex]

Step-by-step explanation:

Arithmetic sequence:-

Step1:

Given sequence is [tex]\frac{3}{4} ,\frac{6}{5} ,\frac{9}{6} ,\frac{12}{7} ,\frac{15}{8}[/tex]

Above sequence taking numerator terms

3,6,9,12,15 are in arithmetic progression

First term a= 3 and difference d = 3

now n t h term of given sequence is

[tex]t_{n} =a+(n-1)d[/tex]

now substitute a =3 and d=3

[tex]t_{n} = 3+(n-1)3 = 3+3 n-3=3n[/tex]

Step2:-

Above sequence taking denominator

4,5,6,7,8...

here a=4 and d=1

[tex]t_{n} =a+(n-1)d[/tex]

[tex]t_{n} =4+(n-1)1[/tex]

[tex]t_{n}=3+n[/tex]

Final answer is the general term of given sequence is

[tex]t_{n} = \frac{3n}{3+n}[/tex]

The radius of a cylindrical gift box is (3x+4) inches. The height of the gift box is three times the radius. What is the surface area of the cylinder? Write your answer as a polynomial in a standard form.

Answers

Final answer:

The surface area of the cylindrical gift box given radius (3x+4) and height 3 times the radius, when calculated and simplified, results in the polynomial[tex]6\pi x^2 + 24\pi x + 32\pi[/tex]  in standard form.

Explanation:

The surface area of a cylinder is calculated by the formula 2πr(h + r), where r is the radius and h is the height of the cylinder. Given the radius r = 3x+4 and the height h = 3*r which is 3*(3x+4), you can substitute these values into the formula. So, the surface area, A = 2π(3x+4)[3*(3x+4) + (3x+4)].

Simplifying, we get A = 6πx(3x+4)+8π*(3x + 4). This can be further simplified into [tex]A = 6\pi x^2 + 24\pi x + 32\pi[/tex], which is the surface area of the cylinder in terms of the variable x in standard form.

Learn more about Surface Area of Cylinder here:

https://brainly.com/question/29015630

#SPJ12

The population of the Seminole tribe is one-fourth the population of the Navajo tribe.
The population of the Seminole tribe is 224,000.What is the population of the Navajo
tribe?
O 56,000
O 896,000
O 96,000
O 1.146,000

Answers

Answer:

Step-by-step explanation:

population of Seminole tribe is 1/4 the population of the Navajo tribe.

the population of the Seminole tribe is 224,000.

let x represent the population of the Navajo tribe

224,000 = 1/4x

224,000 * 4 = x

896,000 = x <===

What is 4/7 devided by 6/7

Answers

Answer:

0.66666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666

Credit card A has an APR of 27.2% and an annual fee of $96, while credit card
B has an APR of 30.3% and no annual fee. All else being equal which of these
equations can be used to solve for the principal Pfor which the cards offer
the same deal over the course of a year? (Assume all interest is compounded
monthly)

Answers

Answer:

d

Step-by-step explanation:

The correct Equation is P x (1 + 0.272/12)¹² + 96 = P x (1 + 0.303/12)¹².

What is Annual Percentage Rate?

APR is the price of using a credit card to borrow money. It is the annual interest rate that you will be charged if you carry a balance, and it frequently varies between credit cards.

For example, you may have one card with an APR of 9.99% and another with an APR of 14.99%.

Given:

Payments are done per month.

So, need to be converted to monthly figures.

APR per month = 27.2% /12

As, 1 year= 12

= P x (1 + 0.272/12)¹² + 96

Credit Card B deal over a year

= P x (1 + 0.303/12)¹²

Thus, the Principal for both cards to offer the same deal will be

P x (1 + 0.272/12)¹² + 96 = P x (1 + 0.303/12)¹²

Learn more about APR here:

https://brainly.com/question/20405134

#SPJ5

Please help this paper is due tomorrow (picture included)

Answers

Answer: [tex]6+x[/tex]

Step-by-step explanation:

In mathematics,  the "Bar models" are used to represent known an unknown quantities and they are very useful to solve problems that involve Addition, Subtraction, Multiplication and Division.

For this exercise you need to analize the data given and observe the bar model provided in the picture attached.

In this case, you can identify two parts in the bar model. These are:

[tex]6[/tex] and [tex]x[/tex]

Then, knowing those parts, you need to find the whole.

You can notice in the bar model that, if you combine (or add) the bars that represent [tex]6[/tex] and the bar that represents [tex]x[/tex], you will obtain the whole bar.

So, you can identify that the bar model represents an Addition.

Therefore, based on the explained before, you can conclude that the algebraic expression shown in the given bar model is the following:

[tex]6+x[/tex]

You need at least 5 pounds of potatoes and onions. Potatoes cost $4 per pound and onions $2. You can spend at the most $18.

A. Define the variables

B. Write a system of liner inequalities that represent this situation

C. Graph the system of liner inequalities

D. Is it possible to buy 5 pounds of potatoes and 2 pounds of onions in the situation? Justify your answer

Answers

I’m not sure but it’s D
pretty sure it’s D because it is possible to buy 5 pounds of potatoes

8 15 27 blank 20 what is the blank number

Answers

Answer:

50?

Step-by-step explanation:

8+12+27=50

1+3+4=8

The missing numbers in the sequence are 10 and 17. The complete sequence is 8, 10, 15, 20, 26, 33, 17, following an alternating difference pattern.

To find the missing numbers in the sequence, let's observe the pattern between the given numbers:

8, __, 15, 20, 26, 33, __

Looking at the differences between consecutive terms, we notice the following pattern:

15 - 8 = 7

20 - 15 = 5

26 - 20 = 6

33 - 26 = 7

We see that the differences alternate between 7 and 5. So, following this pattern, the missing numbers should continue this alternating difference.

The missing numbers are:

8 + 7 = 15

15 - 5 = 10

10 + 7 = 17

So, the missing numbers are 10 and 17.

Therefore, the sequence is: 8, 10, 15, 20, 26, 33, 17.

Complete Question:

What are the missing numbers in the sequence 8 __ , 15 ,20 ,26 ,33 ,__?

Find the volume. Round your answer to the nearest hundredth.
7.7 m
5.3 m
4.2 m
a. 45.01 m3
b. 17.27 m3
c. 171.40 m
d. None of these

Answers

Assuming that the shape is a rectangular prism than the formula would be

V= l*w*h

so if u plug in the numbers...

v= 7.7 * 5.3 * 4.2
v = 171.4 or 171.40

c is your answer, hope that helped

1 Point
The table shows the results of a student survey done by the chef at a school
cafeteria. What is the probability that one of these students is male and
dislikes peas?
Likes peas
Dislikes peas
Total
Male
58
42
100
Female
64
36
100
Total
122
78
200
O
O
O
A. 21%
B. 29%
c. 42%

Answers

Answer:

Step-by-step explanation:

the anser is A

The probability that one of these students is male and dislikes peas would be 32 %.

What is the probability?

Probability refers to a possibility that deals with the occurrence of random events.

The probability of all the events occurring need to be 1.

We can find using the given information.

We have the number of female students that like peas is 64, and the total number of students is 200. That gives us the following fraction.

64/200

Now, turn this into a percentage by making the denominator 100. Which is done by dividing the numerator and denominator each by 2, since the denominator is 100.

32/100 = 32%

Learn more about probability here;

https://brainly.com/question/9326835

#SPJ7

Show an example of how you can put two triangles together to make a quadrilateral

Answers

Answer:

876997# nebulated ny 653 answere is simple 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

what is the slope of the following function

Answers

Answer:

0

Step-by-step explanation:

Because the equation of this graph is y=-1, where this graph's slope is 0 and the y-intercept is -1.

What is the value of c in the equation? 15.3= C/2.1

Answers

Answer:

c=32.13

Step-by-step explanation:

The value of C of the equation 15.3= C/2.1 is 32.13.

What is an equation?

Two algebraic expressions having same value and symbol '=' in between are called as an equation.

Given equation:

15.3= C/2.1

To find the value of C:

Using cross multiplication,

C = 15.3 x 2.1

Solving,

C = 32.13

Therefore, the value of C = 32.13

To learn more about the equation;

https://brainly.com/question/12788590

#SPJ2

The population of a city doubles during the workday. At the end of the workday, the population decreases
by half. If the population of the city is roughly 4,000,000 people before "rush hour," and the morning rush
hour actually lasts 3 hours, what would be the population 12 hours after the start of rush hour if the
population continued to double every 3 hours? People leave the city for home at the same rate as they
come into the city. If there are 8,000,000 people in the city during the workday, what would be the
population 12 hours after the start of the evening rush hour, which lasts 3 hours, if the population continued
to be cut in half every 3 hours?

Answers

Final answer:

The population 12 hours after the start of rush hour, which lasts 3 hours and the population doubles every 3 hours, would be 64,000,000 people. The population 12 hours after the start of the evening rush hour, which lasts 3 hours and the population is cut in half every 3 hours, would be 500,000 people.

Explanation:

To calculate the population 12 hours after the start of rush hour, which lasts 3 hours, we need to find the number of doubling periods that occur within that time frame. Since the population doubles every 3 hours, there are 12/3 = 4 doubling periods.

Each doubling period results in the population doubling, so if the population starts at 4,000,000 people, after 4 doubling periods it would be 4,000,000 × 2⁴ = 64,000,000 people.

To calculate the population 12 hours after the start of the evening rush hour, which lasts 3 hours and the population is cut in half every 3 hours, we need to find the number of halving periods that occur within that time frame. Since the population is cut in half every 3 hours, there are 12/3 = 4 halving periods.

Each halving period results in the population being cut in half, so if the population starts at 8,000,000 people, after 4 halving periods it would be 8,000,000 × (1/2)⁴ = 500,000 people.

two different type of teas are sold in your store. If you know 100 cups of tea were sold and one type sold 5 times as much as the other type,how much of each type of tea were sold

Answers

We know there is a total of 100 cups of tea sold and that there are two types of teas involved.

x = tea 1

y = tea 2

We can set up two equations and use substitution to solve:

x + y = 100 cups of tea sold total

One of the teas sold 5 times as much as the other. Let's believe that this was tea 1:

x = 5y (5 times as much means multiplication, and 'other' means y)

If x = 5y, then this must be true for the first equation. So we'll test this by plugging it in:

5y + y = 100

6y = 100

y = about 16.67

Now we can use this number to solve for x in the original equation:

x + 16.67 = 100

x = 83.33

I need help please and thank

Answers

Answer = 105

180 - 75 = 105

HEEEEEELP MEEE PLEASEEEE ;(

Answers

If There is a math equation you can use math-way.

Also it would help if you can take a better picture.

Once you take a better picture I promise i will try my best to answer the question.

Answer:

2 books cause if the total is around 49 dollars 21 is rounded to be half

Step-by-step explanation:

4x+3=-5 helppp please

Answers

Answer: x = -2

Step-by-step explanation: To solve for x, in the equation you see here, our goal is to get x by itself.

Our first step will be to isolate the term containing x which in this case is 4x. To isolate 4x, we have to get rid of the +3 by subtracting 3 from both sides of the equation. On the left, +3 and -3 cancel out and we're left with 4x. On the right, -5 - 3 simplifies to -8.

Now we have the equation 4x = -8.

To get x by itself, we divide both sides of the equation by 4. On the left, the 4's cancel and on the right, -8 divided by 3 is -2 so x = -2

Answer:

x = -2

Explanation:

4x + 3 = −5

Step 1: Subtract 3 from both sides

4x + 3 − 3 = −5 − 3

4x = −8

Step 2: Divide both sides by 4

4x / 4 = -8 / 4

x = -2

Find the area of the triangle. If necessary, round the answer to two decimal places.
a=14 b=32 c=26

Answers

if i used the correct numbers for the base and the height the area of the triangle would be 182

Answer:

A≈177.99

Step-by-step explanation:

Are the ratios 3:7 and 1:2 equivalent

Answers

No, because 7 is prime (i’m pretty sure they aren’t)

Answer: No

Step-by-step explanation:

Finding equivalent ratios is just like finding equvalent fractions.

For Example: 3/6 = 1/2 that also means 3:6 will equal 1:2

Good Luck!

Is this answer right!

Answers

Answer:

Yes! You are correct!! Just add the unit ($).

Step-by-step explanation:

Although this question was asked a while ago, it's better to leave it answered rather than leaving it unanswered.

In this question, we are told that Carl earned $25 from mowing lawns on Friday. Carl also earned some amount of money from raking leaves for 3 hours. In the end, he spends 12 dollars on the movies. We need to find out how much money he has left.

Since he earns 6 dollars an hour for raking leaves, we can multiply $6 by 3 hours to get $18 for raking leaves for 3 hours.

We can add this to his earnings on Friday, which will get us $43 as his total balance.

He then spends 12 dollars, so we subtract 12 from 43. This means Carl will only have $31 left.

Hence, your answer is correct! Just don't forget the unit. Have a great day!!! :)

4x−4y
−9x−4y


=−2
=−3

Answers

Answer:

(1 / 13 , 0.5769)

Step-by-step explanation:

I hope that I solved it correctly

the numbers are a bit ugly though

A rectangular closet is 4 feet long and 5 feet wide. What is its area?

Answers

Answer:

4x5=20               20 feet is the area

Step-by-step explanation:

4*5 is 20 ft squared

10. If the sum of the measures of the interior
angles of a polygon is 5400º, how many sides
does it have?

Answers

Answer: 32 sides

Step-by-step explanation:

Formula for interior angle of a polygon = ( n - 2 )180°, where n is the number of sides of the polygon

Now equate the formula to 5400°

( n - 2 ) × 180° = 5400°

open bracket by multiply by 180°

180n° - 360° = 5400°

          180n° = 5400° + 360°

          180n° = 5760

                 n = ⁵⁷⁶⁰/₁₈₀

                 n = 32

so the polygon has 32 sides

if the sales tax rate is 8.25% how much is a $24 item?

Answers

Answer:

try this $25.98

Other Questions
Culture makes organizations feel different from one another. Different companies, even companies in the same industry, just do things differently. You can experience this for yourself by going to two local supermarketsone a part of a large chain and the other locally owned. Look around you and answer the followig questions. 1. Does someone offer to help you when you walk in the door? 2. Do the employees seem happier at one location compared to the other? 3. Do people wear uniforms at one place but not at the other? Please Our need to belong is most clearly threatened by:_______. a. cluster migration. b. drive reduction. c. ostracism. d. unit bias. e. refractory periods. While floating in space a 100.-kg robot throws a 0.800-kg wrench at 12.0 m/s toward its human partner working on the spaceship. How fast will the robot recoil? A fullback with a mass of 100kg and a velocity of 3.5 m/s duewest collides head-on with a defensive back with a mass of 80 kgand a velocity of 6 m/s due east.a.)What is the initial momentum of each player?b.)What is the total momentum of the system before thecollision?c.)If they stick together and external forces can be ignored,what direction will they be traveling immediately after theycollide? 100 Points! What are the classifications of each system?Drag the answer into the box to match each system. The characteristic that is demonstrated when a high degree of consensus can be secured among independent measurers using the same measurement methods is _____ refers to a type of research study in which one variable is manipulated by the researcher, while all the other factors are held constant. Summarize how the climate of the Miocene epoch impacted the evolution of hominins Let S = {2,4,6} and T = {1,3,5}. Use the set-roster notation to write each of the following sets, and indicate the number of elements that are in each set? a. S X T b. T X S c. S X S d. T X T How many beats are in the following example, including rests? Suppose that vehicles taking a particular freeway exit can turn right (R), turn left (L), or go straight (S). Consider observing the direction for each of three successive vehicles. (Enter your answers in set notation. Enter EMPTY or for the empty set.)(a) List all outcomes in the event A that all three vehicles go in the same direction.A = (b) List all outcomes in the event B that all three vehicles take different directions.B = (c) List all outcomes in the event C that exactly two of the three vehicles turn right.C = (d) List all outcomes in the event D that exactly two vehicles go in the same direction.D = (e) List outcomes in D'.D' = List outcomes in C D.C D = List outcomes in C D.C D = What is a massive, room-sized computer that process and store enormous amounts of bulk data and information? 3. How did Karl Marx and Max Weber differ in their theoretical assumptions? (1 point)A.Weber failed to recognize class differences in society.B.Marx was a theoretical sociologist, and Weber was strictly an applied sociologist.C.Weber addressed social structure, which Marx totally ignored.D.Marx believed economics was the central force of social change, and Weber claimed it was religion For the function f(x) = 3(x 1)2 + 2, identify the vertex, domain, and range. a- The vertex is (1, 2), the domain is all real numbers, and the range is y 2. b- The vertex is (1, 2), the domain is all real numbers, and the range is y 2.c- The vertex is (1, 2), the domain is all real numbers, and the range is y 2. d- The vertex is (1, 2), the domain is all real numbers, and the range is y 2. What type of cost is incurred when a project must be conducted faster than normal, and overtime for workers and / or extra charges for rapid delivery from suppliers are necessary? olve for x. -3x = -15 x = -45 x = 5 x = -5 A new computer system sells for approximately $2000 and depreciates at the rate of $500 per year. Which of the following options has drastically reduced the costs of operating and transacting on a global scale? A. Internet B. Social network C. Intranet D. Extranet E. Value network can someone help me with this problem please Maya is claiming that she was subjected to racial harassment by her co-workers. To hold her employer liable for racial harassment, Maya must prove that _______ Steam Workshop Downloader