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
mars1129 [50]
3 years ago
10

A train of length 180 m approaches a tunnel of length 620 m.

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
7 0
After coming out of the tunnel it has to travel it's own length to pass through the tunnel completely. So the train of length 180 metres takes 0.889 seconds to pass through a tunnel of length 680 metres completely.
You might be interested in
john likes to walk the steps of the department he works for during lunch break. There are s steps in his department. Today John
xenn [34]
Ask your teacher he should fish d comb hangdog Shabbat
3 0
2 years ago
Which of the following statements does not describe a characteristic of the line of best fit for a scatter plot?
stira [4]

A statement which does not describe a characteristic of the line of best fit for a scatter plot is that: A. the line of best fit should be the average of all the data points.

<h3>What is a scatter plot?</h3>

A scatter plot can be defined as a type of graph which is used for the graphical representation of the values of two variables, with the resulting points showing any association (correlation) between the data set.

<h3>What is a line of best fit?</h3>

A line of best fit is also referred to as a trend line and it can be defined as a statistical (analytical) tool that is used in conjunction with a scatter plot, in order to determine whether or not there's any correlation between a data.

<h3>The characteristics of a line of best fit.</h3>

The statements which describe a characteristic of the line of best fit for a scatter plot include the following:

  • The line should be as close to the points as possible.
  • The number of points above the line should be equal to the number of points below the line.
  • The distance between the points above the line and the line should be relatively equal to the distance between the points below the line and the line.

Read more on scatterplot here: brainly.com/question/6592115

#SPJ1

7 0
1 year ago
Place the circles in order from the circle with the largest area to the circle with the smallest area.
11111nata11111 [884]

Answer:

Diameter 16, radius 7, circumference 37.68, diameter 8

Step-by-step explanation:

Largest area will be in a circle with the largest radius. So let's find all radii.

d = 8, so r = 4;

r = 7;

circumference = 2pi*r = 37. 68, so r = 6

diameter 18, so r = 8

5 0
3 years ago
2. Jacqui is putting together sets of greeting cards for a school fundraiser. There are four different card options, two
Marizza181 [45]

Answer:

32

Step-by-step explanation:

The problem statement states that there are four card option two colored envelopes options and four sticker design options and as the greeting card constitutes of one type of card.one colored envelopes and one sticker design then the number of ways Jacqui arrange the greeting card sets can be calculated using the counting principle that is n1*n2*n3. So, the number of ways Jacqui arrange the greeting card sets can be calculated using the counting principle=4*2*4=32 different ways.

3 0
4 years ago
the first ferris wheel was built in 1893 in chicago. It’s diameter was 250 feet. How many feet did the ferris wheel rotate with
Mice21 [21]

Answer:

about 785.4

Step-by-step explanation:

The circumference of a circle is pi times the diameter:

C = πd

C = π·(250 ft) ≈ 785.4 ft

_____

Most scientific or graphing calculators have the value of π built in. If yours doesn't, a value good for at least 6 significant figures is the ratio 355/113.

5 0
3 years ago
Other questions:
  • (5a + a2 - 14) (10a + a2 + 39)
    11·1 answer
  • A lorry weighs 4.65 tonnes. It carries a load of 748 kg. What is the total weight of the lorry and its load?
    9·1 answer
  • 4 to the square root of 2 x the square root of 2
    12·1 answer
  • Help I really need help
    5·1 answer
  • What is 2x^2-8x<br> factorised*
    5·1 answer
  • What is the solution to the system of equations graphed below?
    6·1 answer
  • SOLVE
    11·1 answer
  • State the restrictions, if any.<br> F(x)= x/x2-81
    8·1 answer
  • What is 1/3 divided by 5?
    12·2 answers
  • Can someone help me with this having trouble !
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!