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
elena55 [62]
3 years ago
6

A train traveled 399 miles in 7 hours. Find the trains speed.

Mathematics
2 answers:
Andrews [41]3 years ago
8 0

Answer:

57 mph

Step-by-step explanation:

were tryin to find its speed in the terms of mph which is miles per hour, so we need to find out how many miles it goes in a hour, so we divide 399 mph by 7 hours to get 57 mph.

Aleksandr [31]3 years ago
6 0

57 mph is the answer

You might be interested in
Someone please help thanks!!!
MArishka [77]

Answer:

-3/2

Step-by-step explanation:

The slope of a line is calculated by dividing the difference in the y-coordinates by the difference in the x-coordinates.

Here, the given ordered pairs are (-6, -8) and (-14, 4), so the slope is:

slope = m = (4 - (-8)) / (-14 - (-6)) = 12 / (-8) = -3/2

The answer is thus -3/2.

<em>~ an aesthetics lover</em>

3 0
2 years ago
Read 2 more answers
Find the area of the regular polygon. Round to the nearest tenth if<br> necessary.<br> 7.5<br> 5.1
zalisa [80]

Answer:

that will be 25 if you put 30 in the thing

8 0
2 years ago
4/9 as decimal show your work
Fed [463]
    4/9 

= 0.44444444

= Rounded to 0.44

The correct answer is 0.44
4 0
3 years ago
Read 2 more answers
SOMEONE HELP PLEASE
Alborosie
I’m sorry but I can’t understand what the question is saying
4 0
2 years ago
If every student in a large Statistics class selects peanut M&amp;M’s at random until they get a red candy, on average how many
kotykmax [81]

Question:

According to Masterfoods, the company that manufactures M&M's, 12% of peanut M&M's are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly select peanut M&M's from an extra-large bag looking for a red candy.

If every student in a large Statistics class selects peanut M&M’s at random until they get a red candy, on average how many M&M’s will the students need to select? (Round your answer to two decimal places.).

Answer:

If every student in the large Statistics class selects peanut M&M’s at random until they get a red candy the expected value of the number of  M&M’s the students need to select is 8.33 M&M's.

Step-by-step explanation:

To solve the question, we note that the statistical data presents a geometric mean. That is the probability of success is of the form.

The amount of repeated Bernoulli trials required before n eventual success outcome or

The probability of having a given number of failures before the first success is recorded.

In geometric distribution, the probability of having an eventual successful outcome depends on the the completion of a certain number of attempts with each having the same probability of success.

If the probability of each of the preceding trials is p and the kth trial is the  first successful trial, then the probability of having k is given by

Pr(X=k) = (1-p)^{k-1}p  

The number of expected independent trials to arrive at the first success for a variable Xis 1/p where p is the expected success of each trial hence p is the probability for the red and the expected value of the number of trials is 1/p or where p = 12 % which is 0.12

1/p = 1/0.12 or 25/3 or 8.33.

4 0
3 years ago
Other questions:
  • Se x e um número real tal que 3x +1/2 &gt; 2x - 5, então podemos afirmar que;
    9·1 answer
  • 20 Points!<br>please Help Thanks!<br><br>In Return brainliest and special thanks
    13·1 answer
  • Evaluate csc(3π/4)<br><br><br> please show work
    7·2 answers
  • Math help asap timed 24 points!
    10·1 answer
  • In triangle XYZ, m∠Z &gt; m∠X + m∠Y. Which must be true about △XYZ?
    10·2 answers
  • 3 5/6 x 2 =? choose two answers HELPPP
    14·2 answers
  • 8 individually powered machines have motors that use 203 watts each. What is the total wattage used when all machines are runnin
    7·1 answer
  • PLEASE HELP ME! I NEED THIS BY TODAY
    7·2 answers
  • Solve the equation <br>3/4(x-16)=-2(x-3)+4​
    8·1 answer
  • What is the approximate value of x in the diagram below
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!