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
ale4655 [162]
3 years ago
15

Ardem has two lights one flashes every 15 seconds the other flashes every 42 seconds. They start flashing at the same time. Afte

r how many seconds will they next flash at the same time??
Mathematics
1 answer:
Korolek [52]3 years ago
8 0

Answer: After 210 seconds they with next flash at the same time.

Step-by-step explanation:

Given: Ardem has two lights.

One flashes every 15 seconds the other flashes every 42 seconds.

If they started flashing at the same time, then the number of seconds after that they with next flash at the same time = LCM (15, 42)   [LCM - Least common multiple]

Prime factorization of 15 = 3 x 5

Prime factorization of 42 = 2 x 3 x 7

Then, LCM (15, 42) = 2 x 3 x 5 x 7 = 210

i.e. After 210 seconds they with next flash at the same time.

You might be interested in
When Jerrie bought her Honda, the odometer
Deffense [45]

Answer:

1,243  miles

Step-by-step explanation:

The original value is: 18,146 miles

The new values is: 33,062 miles

The increase is hence: <em>The original value subtracted from the new value</em>

33062 - 18146 = 14916

The increase is 14,916 miles which has been gained over 12 months

The average miles per month can be gotten by dividing the increase by 12

14916 ÷ 12 = 1243

∴ On average, Jerrie has driven 1,243 miles per month

5 0
3 years ago
If a ball is thrown directly upward with a velocity of 34 ft/s, its height (in feet) after t seconds is given by y = 34t − 16t2.
SIZIF [17.4K]
23 seconds!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
8 0
4 years ago
The fourth place competitor
olya-2409 [2.1K]
I don't know for sure, but I think its called the third runner-up.
7 0
4 years ago
Read 2 more answers
Which statements are true about the ordered pair (2, 3) and the system of equations?
LuckyWell [14K]
I think its D. the ordered pair (2,3) is not a solution to the system of linear equation.
7 0
4 years ago
Point: (4, -6)<br> Slope: 1<br> FIND THE EQUATION
kotegsom [21]
It would be y+6=1(x-4)
8 0
3 years ago
Other questions:
  • The answer to this picture
    6·2 answers
  • How do you graph a 180 degree rotation
    8·1 answer
  • Graphing sinusoidal functions I really need help.
    7·1 answer
  • Please help me to prove this..​
    14·2 answers
  • What is the volume, in terms of cubic inches, of a cone with a diameter of 8 inches and a height of 10 inches? Use 3.14 for LaTe
    7·2 answers
  • PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPPPPPPPPLPPPPPPPPPPPPPPPPPPPPPPPPP I SWEAR I DO ANYTHING JUST PLZZZZZZZZZZZZZ
    13·1 answer
  • The question goes like this:
    8·2 answers
  • Use the distributive property to rewrite this expression. 4(c+3)<br><br> 4(c+3)=?
    14·1 answer
  • on a restaurant menu you can have three course meal by selecting one for me to course they're five appetizers for main dishes th
    9·1 answer
  • What does the data tell you about the eugenics<br> movement?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!