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
zvonat [6]
3 years ago
13

A rotating beacon is located 1 kilometer off a straight shoreline. If the beacon rotates at a rate of 3 revolutions per minute,

how fast (in kilometers per hour) does the beam of light appear to be moving to a viewer who is 1/2 kilometer down the shoreline?
Mathematics
1 answer:
Valentin [98]3 years ago
5 0
Find the radius of the circle by finding the distance between the viewer and the beacon. 
then find the circumference by using 2πr2

this will be the distance the light covers over 1 revolution.
then using dimensional analysis:
3 rev/min (7.037 km/rev) (60 min/1 hr) = 1266.7 km/hr
You might be interested in
3<br><img src="https://tex.z-dn.net/?f=%203%5Cfrac%7B4%7D%7B5%7D%20%20%5Cdiv%20%203%5Cfrac%7B1%7D%7B6%7D%20" id="TexFormula1" ti
Jobisdone [24]
Hey There!

Here is your answer:

First write the equation down:

-3 4/5 ÷ -3 1/6

Then put the mixed fractions into whole numbers:

-3 4/5= 5×-3=-15+4=-11= -11/5
&
-3 1/6= 6×-3=-18+1=-17= -17/6

Now right the new problem:

-11/5×6/-17

Now multiply:

-11×6=-66
5×-17=-85

Which means -66/-85 is your answer!

Hope this helps!
3 0
3 years ago
Tom has been playing on the school bowling team. In his first year as a freshman, his bowling average was 180. He had been bowli
Advocard [28]

Answer:

0.000025

Step-by-step explanation:

the difference between225-180=45

so the percentage= 45×100/100

=0.45%

as the instruction say=0.45%/180

=0.0045/180

=45/1800000

=0.000025

3 0
3 years ago
How many endpoints are needed to draw four line segments
Paladinen [302]
If these four line segments are connected (kind of like a square) then only 4 endpoints are needed, but if they are all separate line segments, then you would need a maximum of 8 endpoints because any line segment has 2 endpoints and 4 line segments with 2 endpoints a piece equals 8 endpoints in total. 

I hope this helped! :)
5 0
3 years ago
Answer using steps: An ice cream shop sells ice cream cones with exactly 1 of 3 ice cream flavors in the cone. The 3 flavors are
xeze [42]

Step-by-step explanation:

udhfhxhsjdjejdbcjdxbshajdddjwjed

4 0
3 years ago
The Millers receive a dinner bill for $122.75. The sales tax rate is 8%. They want to leave an 18% tip on the total bill after t
Aleks04 [339]

Answer:

they will start with $122.75 dollars to be paid and add on 8% of $122.75 which is $9.82.

the next step would be to add together 122.75+9.82 and you get $132.57

the last step woukd be to find what 18% of 132.57 is and that would be $23.86

add 132.57+23.86=$156.43

$156.43 is your answer

7 0
4 years ago
Other questions:
  • Product of nine and the sum of a number Z and four
    12·2 answers
  • Exponential functions increase rapidly how would you describe the behavior of an inverse function to that
    15·1 answer
  • help max find the sum of the problem:451+246+222= , choose yes or no to tell if max should regroup: @regroup the ones @add the r
    5·1 answer
  • I want answer part b ​
    7·2 answers
  • What is the solution to x2 = 225?
    12·2 answers
  • Find the area of the triangle.<br> A) 78 m2 <br> B) 175 m2 <br> C) 196 m2 <br> D) 350 m2
    6·2 answers
  • Find the discount on a pair of jeans that originally cost $35 with 20% off coupon
    15·2 answers
  • How many components is this?<br><br> CH11H2O
    14·1 answer
  • Please help me and explain the anwser
    5·1 answer
  • Find the area of the figure will give brain illest if correct! ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!