An 80 metre long train crosses a 120 metre long platform in 20 seconds, what is the speed of the train per hour?​


ans:
Total distance= length of train + length of platform

I.e 80+120= 200 m but need in kmph so 0.2 km

Time = 20 second but need in hours so 20/(3600)= 1/(180)

Speed = distance / time = 0.2*180= 36 kmph


Answers

Answer 1
Total distance= length of train + length of platform

I.e 80+120= 200 m but need in kmph so 0.2 km

Time = 20 second but need in hours so 20/(3600)= 1/(180)

Speed = distance / time = 0.2*180= 36 kmph

Related Questions

1.A cook has 2 3/4 pounds of ground beef.How many quarter-pound burgers can he make?

2.A child needs to take 1/6 tablespoons of medicine per day in 4 equal doses.How much medicine is in each dose?

3.How many 5/6 cup salt shakers can be filled from 24 cups of salt?

Answers

1- 11 quarter pounds burgers
2- 1/24 is a dose
3- 20 salt shakers

Evaluate the following expression: 24^3+7.2-15^5+6.2

Answers

Answer:

=−745,537.6

Step-by-step explanation:

Hope that helps

Round to the nearest whole number 30.76

Answers

Answer:

31

Step-by-step explanation:

The correct answer is 31.

Since 7 is greater than 5, you add a 1 in replace of the 0 to get 31.

Answer:

31

Step-by-step explanation:

30.76 is more then 30.50 therefore  you round forward and get 31.

If You Know The Answer Help :)

Answers

Answer:

0.3

Step-by-step explanation:

Answer:

3/20

Step-by-step explanation:

1/5=4/20

7/20-4/20=3/20

Hope this helps!

Please only answer if you truly know I’m giving about 100 points for this that’s a hell of a lot of points for one question so answer right thank you!

Answers

step 1, move -5 on the left side to the right side and change the sign then add up with 55

step 2, multiply 20 by (10 - 13x) by the associative property

step 3, add the coefficient of the variable x on the left side and move 20 to the right side by changing its sign

step 4, move -34x to the left side by changing the sign then add up with -17x

step 5, to find the x value, move the x coefficient to the right side and divide it, you get the value

Kelly bought a pen for $2.50, a pencil for $0.36, a notebook for $3.75, and a highlighter for $1.99. She used a coupon for 10% off. How much did she spend in total?

Answers

Hey hope this helps I got 7.74

Can someone do these problems, thank you :-)

Answers

Answer:

Step-by-step explanation:

1) 2^2 + 2^2 = c^2

4 + 4 = c^2

8 = c^2

c = sqrt8

2) 2^2 + 3^2 = c^2

4 + 9 = c^2

13 = c^2

c = sqrt13

3) 10^2 + 4^2 = c^2

100 + 8 = c^2

108 = c^2

c = sqrt108

4) 1^2 + 5^2 = c^2

1 + 25 = c^2

26 = c^2

c = sqrt26

5) 3^2 + 1^2 = c^2

9 + 1 = c^2

10 = c^2

c = sqrt 10

6) 9^2 + 9^2 = c^2

81 + 81 = c^2

162 = c^2

c = sqrt162

A bag contains 13 cups of cat food. Your cats eat 1 1/2 cups of cat food each day .Is there enough to last 2 weeks

Answers

no there is not enough 2 weeks is 14 days and the bag contains 13 cups and the cat eats more than 1 cup per day

Which of the following is the best estimate of the measure of the angle the skateboard makes with the ground ?

Answers

Answer:

Correct choice: C. 74.5

Step-by-step explanation:

Trigonometric Ratios

In every right triangle (those who have an internal angle of 90°), the six trigonometric ratios are valid. They relate the other internal angles with the lengths of the triangle.

The skateboard, the wall, and the ground form a right triangle. We need to find the measure of the angle formed by the skateboard with the ground. Let's call it β. In a right triangle, the cosine of an angle is defined as

[tex]\displaystyle \cos\beta=\frac{\text{adjacent leg}}{\text{hypotenuse}}[/tex]

The adjacent leg of β is the side with length 8 in, and the hypotenuse is the length of the skateboard, 30 in, thus:

[tex]\displaystyle \cos\beta=\frac{8}{30}}=0.267[/tex]

Using a digital calculator we find:

[tex]\beta=\cos^{-1}(0.267)[/tex]

[tex]\beta=74.5^\circ[/tex]

Correct choice: C. 74.5

If points A,B and C are collinear, determine the value of x in the diagram.

Answers

Answer:

x equal four-teen... I'm pretty sure brainliest plsss

Use the image to answer the question below. 10 8 A B 10 8 10 -10 Which series of transformations would result in a figure that is congruent to the triangle ABC?​

Answers

Answer:

c b a

Step-by-step explanation:

Answer:

cba

Step-by-step explanation:

sorry if its wrong

Please Look at the picture

Answers

The answer for the blank should be -75

It turns into a positive and ends up with x=8

Hope this helps! :)

Solve the inequality.
2(4+2x)25x+5

Answers

Answer:

[tex]100x^{2} +200x+5[/tex]

Step-by-step explanation:

Answer:

x ≤ 3

Step-by-step explanation:

For how many different positive integers n is each of n, n+2, and n+4 a prime number?

Answers

Answer:

3,5,7

Step-by-step explanation:

odd numbers is a multiple of three, at least one of them can't be prime

hope this helps  there is 1 of them

Round to the nearest thousand 11,621

Answers

Answer:

12,621

Step-by-step explanation:

when rounding there asking for the thousands therefore you have to look at the hundreds place and since there's a six in the hundreds place the one is going to change to a 2 the answer is 12,621

original amount : 30, new amount : 45 what is the percent change

Answers

Answer:

50%

Step-by-step explanation:

Percent change = {(New-Old)/(Old)}*100%

So,

{(45-30)/(40)}*100

=(15/30)*100

=50%

hello please help will give brainliest

Answers

Answer:

c

Step-by-step explanation:

288/6 = 48

Hope this helps

Answer:

c.

Step-by-step explanation:

For ratio, u should divide

So, 288/6 = 48:1 or 48/1

6 times 48=288

Pls mark me brainliest

Please help ASAP!! Will give brainliest if right

If DF ≈ DG, find mD.

A. 34°
B. 46°
C. 67°
D. 134°

Answers

Answer:

C : 67°

Step-by-step explanation:

The angles are equal to each other therefore they would all be the same measurement which is 67°

Hope this helps

Answer:

The answer is C.

Hope this helps

Need help !!!!!! !!!!!

Answers

Answer:

C is your answer

What is the value of 4x – 3y if x = 3 and y = 6?

Answers

4x — 3y if x = 3 and y = 6
I think 8 m

Answer:

The value is -6.

Step-by-step explanation:

First, you use subsitution.

4(3) - 3(6)

Then, you multiply.

12 - 18

Do the subtraction and you're left with -6 as your answer.

2x+ 8y = -3
3x+ 6y = -4
Choose all answers that apply

Answers

multiply the top equation by 3, multiply the bottom equation by 4, then subtract the bottom equation from the top equation

multiply the top equation by 3, multiply the bottom equation by -2, then add the equations

How do you do these questions?

Answers

Step-by-step explanation:

(a) Fₙ₋₁ > 0, so Fₙ₊₁ > Fₙ.  Each term is bigger than the one before it, so the function is increasing, meaning the series will diverge to infinity.

(b) Fₙ₊₁ / Fₙ = (Fₙ + Fₙ₋₁) / Fₙ

Divide.

Fₙ₊₁ / Fₙ = 1 + (Fₙ₋₁ / Fₙ)

Rewrite the second fraction using negative exponent.

Fₙ₊₁ / Fₙ = 1 + (Fₙ / Fₙ₋₁)⁻¹

Take the limit of both sides as n approaches infinity.

lim(n→∞) Fₙ₊₁ / Fₙ = 1 + lim(n→∞) (Fₙ / Fₙ₋₁)⁻¹

Substitute with φ.

φ = 1 + φ⁻¹

Solve.

φ² = φ + 1

φ² − φ − 1 = 0

φ = [ -(-1) ± √((-1)² − 4(1)(-1)) ] / 2(1)

φ = (1 ± √5) / 2

Since the ratio can't be negative:

φ = (1 + √5) / 2

A bird goes from a higher location to a lower location at a
rate of 2 meters per second,
Which equation models the change in the bird's position at 30 seconde?
A. (-30)(-2) = -60
B. 30(-2) = -60
C. 30.2 = 60
D. 30(-2) = 60

Answers

I think it’s B not sure

Answer: It's B.

Step-by-step explanation: I took the test.

What does 3g=
In math 8th grade

Answers

Answer:

3g can mean several things, depending on the context of the problem. g can be a variable, but it can also mean "grams"

Step-by-step explanation:

1. f(x) = 3x – 2; f(4)??

Answers

Answer:

the answer is 5

Step-by-step explanation:

f(4) = 3(4) -2

7 - 2 = 5

Please help will put brainliest

Answers

Answer:

e^2v/2a^3y^7

Step-by-step explanation:

2(x + 7) + 3x = 12 (given)
2x + 14 + 3x - 12 (?)
5x + 14 - 12 (simplify)
5x = -2 (subtraction)
x = -2/5(division)
What is the missing reason?
A)
Addition
B)
Subtraction
c)
Reflexive Property
D)
Distributive Property

Answers

It’s distributive because you multiplied the 2 to the x and the 7.

A local farm has a 0.5 acre field that was planted with 26,100 corn plants. One acre is equivalent to 43,500 square feet. Assuming the same planting density, how many corn plants could they plant on a field with an acre of 80,000 square feet

Answers

Answer:

96000 corn

Step-by-step explanation:

80,000/43500 = 1.84

1.84/0.5 = 3.678

3.678 x 26100 = 96000

Use the figure at the right. If JK = 2x + 12 and NO = 14, what is the value of x?

Answers

Answer:

X=8

Step-by-step explanation:

JK would equal 28, since it basically is double the side of that triangle. So now we have the equation, 2x+12=28. Now we solve using inverse operation. 28-12=16 and then 16 divided by 2 is 8, so x=8.

The required simplified value of x is 8, for the given triangle.

What is the midpoint?

A midpoint is a point on the line whose distance from both ends of the line is equal.

What is the triangle?

The triangle is a geometric shape that includes 3 sides and the sum of the interior angle should not be greater than 180°

Here,
The property of a triangle states that the line joining the midpoints of the two adjacent sides is equal to half of the third side.
So,
JK = 2NO
2x + 12 = 24
x = 16 / 2
x  = 8

Thus, the required simplified value of x is 8, for the given triangle.

Learn more about triangles here:

https://brainly.com/question/2773823

#SPJ2

The length of a quarter is 0.955 inch. Round the length of a quarter to the nearest tenth of an inch

Answers

Answer:

the answer to the question is 0.96.

Answer:

1 inch

Step-by-step explanation:

the 9 is in the tenths place.  5 or more you need to round up.

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