Do you remember when you were learning about
Least Common Multiple (LCM) ? And you were
wondering what on Earth you would ever need it for ?
THIS IS IT !
The amount of time after 8 PM when the lights will flash
together again is the LCM of 20 seconds and 30 seconds.
Do you remember how to find it ?
... When 20 is prime-factored, you have 2 · 2 · 5 .
... When 30 is prime-factored, you have 2 · 3 · 5 .
... So the Least Common Multiple of 20 and 30 is 2 · 2 · 3 · 5 = 60 .
The lighthouses will flash together again in 60 seconds after 8 PM.
That'll be 8:01 PM.
Answer:
if its 4 as a whole number 4/1
Step-by-step explanation:
This can be done without exponential equations.
It doubles every 12 years so it has doubled in price
5,000 * 2 = 10,000
After 36 years the value has increased 8 times
5,000 * 8 = 40,000
After 48 years the value has increased 16 times
5,000 * 16 = 80,000
Answer:
The solution to the inequality is:
Please also check the graph of the solution to the inequality.
Step-by-step explanation:
Given the inequality
switch sides
Multiply both sides by -1 (reverse the inequality)
Simplify
Multiply both sides by 4
Simplify
Therefore, the solution to the inequality is:
Please also check the graph of the solution to the inequality.
Answer:
Step-by-step explanation:
if you're trying to find the length of the missing side for the right triangle ABC with sides A=5, B=13, C=? ,
Then you need to solve A^2+B^2=C^2
-> 5^2+13^2=C^2
-> 25+169=194=C^2
Solve C^2=194 so C=13.93.
