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
Gekata [30.6K]
3 years ago
10

A boat travelling upstream goes 36 kilometers in 6 hours. If the return trip takes only 3 hours, what is the speed (in kilometer

s per hour) of the boat in still water
Mathematics
1 answer:
mr_godi [17]3 years ago
8 0
11 kilometer per hour
You might be interested in
If you have 66 data observations in a sample, how many classes (bins) does the sturges' rule recommend for you to construct a fr
Iteru [2.4K]

According to Sturge's rule, number of classes or bins recommended to construct a frequency distribution is k ≈ 7

Sturge's Rule: There are no hard and fast guidelines for the size of a class interval or bin when building a frequency distribution table. However, Sturge's rule offers advice on how many intervals one can make if one is genuinely unable to choose a class width. Sturge's rule advises that the class interval number be for a set of n observations.

Given,

n = 66

We know that,

According to Sturge's rule, the optimal number of class intervals can be determined by using the equation:

k=1+log_{2} n

Here, n is equal to 66 and by substituting the value to the equation we get:

k=1+log_{2} (66)

k = 7.0444

k ≈ 7

Learn more about Sturge's rule here: brainly.com/question/28184369

#SPJ4

8 0
1 year ago
The length of the diagonal of a cube is StartRoot 48 EndRoot ft. The side length of the cube is 4 ft. What is the length of a di
GREYUIT [131]

Answer:

\sqrt{32} ft

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
You are hiking on a trail that leads to the top of the mountain. At 1 PM you reach an elevation of 4400 feet. At 4 PM you reach
ExtremeBDS [4]
The time from 1 to 4 is 3 hours. (1-2, 2-3, 3-4). 

The height you climbed is 1200 feet. 

1200/3 is 400.

Your final answer should be 400ft/h
5 0
3 years ago
If a1 = 2 and an - 2an-1 then find the value of 06.<br><br><br>need help with these please ​
anygoal [31]

Answer:

Could you please organize your question more?

7 0
3 years ago
___ x 4 = 12<br> ___ x 5 = 20<br> ___ x 2 = 10
RideAnS [48]

Answer:

3 x 4 = 12

4 x 5 = 20

5 x 2 = 10

Step-by-step explanation:

3 + 3 + 3 + 3 = 12

3 four times equals 12

This is the same for the others

4 + 4 + 4 + 4 + 4 = 20

Four 5 times equals 20

4 0
3 years ago
Other questions:
  • Two doctors is blank percent of 25 doctors
    15·1 answer
  • Bailey writes the expression g2 + 14g + 40 to represent the area of a planned school garden in square feet. If g = 5, what are t
    5·1 answer
  • Show that a triangle with vertices at (3,5), (3, 2),<br> and (2,5) is a right triangle.
    10·1 answer
  • I can’t figure this out
    7·2 answers
  • Explain how you would find 12 x 18 using the Distributive Property.
    8·1 answer
  • Feb 16, 2012 - Last year a company made a net profit of $20000 on sales of $1000000. This year they made a net profit of $40000.
    12·2 answers
  • Use the parabola tool to graph the quadratic function
    8·1 answer
  • Simplify the expression.<br> (-0.75x + 6 ) + (5.5x + 7.4)
    5·1 answer
  • Cuál es la formula para sacar el perimetro de una cruz??
    9·2 answers
  • if a, b, and c are prime numbers, do (a b) and c have a common factor that is greater than 1? (1) a, b, and c are all different
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!