C)3.25
195÷60=3.25
every min is 60 seconds
Answer: 90 Earth years.
Step-by-step explanation:
Analizing the information provided in the exercise, you need to find the Least Common Multiple (LCM) of the given numbers.
You can follow these steps:
1. You must descompose 6, 9, 15 and 18 into their prime factors:

2. Finally, you need to choose the commons and non commons with their greatest exponents and multiply them. Then you get:

Therefore, it will take 90 Earth years for them to all line up.
Two angles are complementary if they add up to 90 degrees so we would need to know angle BFE is 90 degrees to identify it as complementary.
Answer:
166 = total amount of money
Step-by-step explanation:
What we spent plus what we have left equal the total amount of money
128.15 + 37.85 = total amount of money
166 = total amount of money
Just multiply every side by 4