chatzigeorgiou100 chatzigeorgiou100
  • 03-11-2020
  • Mathematics
contestada

A blue light flashes every 9 minutes and a red light flashes every 12 minutes. In how many minutes will they both flash?

Respuesta :

Susurrus
Susurrus Susurrus
  • 03-11-2020

Answer:

36

Step-by-step explanation:

We need to find the LCM of both numbers. That is the least common multiple.

The prime factorization of [tex]9[/tex] is: [tex]3 * 3[/tex]. For [tex]12[/tex] it is [tex]2 * 2 * 3[/tex].

So we multiply: [tex]2 * 2 * 3 * 3 = 36[/tex]

Answer Link

Otras preguntas

The Earth has four main seasons: winter, spring, summer, and fall. Which of the following is a cause of seasonal changes on Earth? The Earth rotates. The
Emma uses a 250 meter roll of crepe paper to make streamers. How many dekameters of creme paper does emma use?
Did feudalism create a stable form of government?
Which term refers to the military dictators who took power in Latin America after the Spanish were driven out? A. conquistadores B. creoles C. caudillos D.
A standard coffee mug has a capacity of 16 fluid ounces. If Annie needs to fill 26 mugs with coffee, how many total quarts of coffee does she need?
PLEASE HELP I GIVE THANKS
which point is in the solution set to the system of inequalities: y>2x-1 and y<1/2x+5
Please help me with this two step math problem! THANK YOU !!!!!!!!
PLEASE HELP I GIVE THANKS
an explanation describe if a square-eyed pet mates with another square-eyed pet, can they have any round-eyed offspring.