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
GaryK [48]
3 years ago
12

How many miles does it travel in 1 hour?

Mathematics
2 answers:
podryga [215]3 years ago
8 0
It would be 2.1 hours or about 2 hours.

It says the train travels about 2118 miles per 8 miles. So, divide 2118 by 8, which gives you 264.75 (when you see the word PER it usually indicates to divide). That gives you part A.

Then, you divide 560, (which is t<span>he distance between Columbus, Ohio, and New York) by 264.75  to see how many hours it took, which gives you 2.1152030217...., which simplifies to 2.1. Which gives you the answer for B. 

So, 
A is 560 and
B is 2.1  or 2

</span>
Naya [18.7K]3 years ago
3 0
If you sent up a proportion, 8/144
and simplify it to the unit rate, you get 1/268
and then set up the other fraction x/560.
divide 560 by 268 you get the answer of 2.089... hours

You might be interested in
Water tank A has a capacity of 550 gallons and is 66% full. Water tank B is 53% full. The ratio of the capacity of T. How much w
Anna71 [15]

Tank A capacity = 550 gallons       66% x 550 gallons = 363 gallons in Tank A

How about the water in tank B?

ratio of  11: 15      11/15 = 550/x          550 * 15/11 = cap B = 750 gal       53% 0f 750 = .53 x 750 = 397.5 gal in tank B

4 0
3 years ago
What is the answers and how do u get those answers
Arada [10]
Question 5 and 7 only?
6 0
3 years ago
Many people use scanners to read documents and store them into pdf file. To help determine which brand of scanner to buy, a stud
konstantin123 [22]

The data is missing in the question. The data is provided below :

Document : 1     2      3      4      5     6      7      8

Brand A       17  29    18    14    21   25    22    29

Brand B       21  38    15    19    22   30    31   37

Solution :

State of the hypothesis of the null hypothesis and alternate hypothesis.

Null hypothesis : $h_A = h_B$

Alternate hypothesis : $h_A > h_B$

These hypothesis is a one tailed test. The null hypothesis will get rejected when the mean difference between the sample means is very small.

Significance level = 0.05

Therefore the standard error is :  $SE = \sqrt{(\frac{s^2_1}{n_1})+(\frac{s^2_2}{n_2})}$

                                                         = 3.602

And the degree of freedom, DF = 14

$t=\frac{(x_1-x_2)-d}{SE}$

 = -1.319

Here, $s_1$ = standard deviation of the sample 1

        $s_2$ = standard deviation of the sample 2

         $n_1$ = size of the sample 1

        $n_2$ = size of the sample 2

         $x_1$ = mean of the sample 1

        $x_2$ = mean of the sample 2      

          d = the hypothesis difference between the population mean

The observed difference in a sample means t static of -1.32. From t distribution calculator to determine P($t \leq -1.32$) = 0.1042  

Since the P value of 0.1042 is greater than significance level o 0.05, we therefore cannot reject the null hypothesis.

But from the test, we have no sufficient evidence that supports that Brand A is better than Brand B.      

8 0
3 years ago
A pilot needs to know the maximum height an aircraft can fly at. The cabin has
oee [108]

round it to a whole number of 100 m witch i think would be 15700 m

also i dint realize it said round it to a whole number and to 100 m so it would also be a whole number of 16000 i think if not this than 20000

3 0
3 years ago
Read 2 more answers
if you are 15 years old now, which equation could be used to solve for your age, y, 12 years from now ?
Vaselesa [24]

Answer:

Hi there!

If you are 15 right now, you would use the expression: 15+12=y

3 0
3 years ago
Other questions:
  • How to show my daughter to do this and it needs to be changed to a mix number.
    11·1 answer
  • PLEASE HELP
    11·1 answer
  • Subtract.(x + 1) − (−2x − 5) A) 6 − x
    14·2 answers
  • 6. What’s the answer to this question?
    8·1 answer
  • HURRY! WILL GIVE BRAINLIEST! HURRY
    12·2 answers
  • Help please (see below)
    11·1 answer
  • Wendy throws a dart at this square-shaped target:
    7·1 answer
  • 1)In a sample of 100 households, the mean number of hours spent on social networking sites during the month of January was 50 ho
    13·1 answer
  • Need help ASAP ......
    15·2 answers
  • There are 1800 students in a school, if the ratio of teachers to students is 2: 7. How many teachers are at the school?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!