Answer:
13.2 minutes or 13 minutes 12 seconds.
Step-by-step explanation:
1. Count how much water drains the first pump every minute. Let the volume of pool be D. Every minute first pump drains D/11 water.
2. Working together(6 minutes) First pump drains 6D/11 water, hence the second pump drains 5D/11 water.
3.Count how much water drains second pump per minute -> (5D/11)/6= 5D/66
4. It takes the second pump 66 minutes to drain pool 5 times, thus it takes 13.2(66/5) minutes to drain the pool, which is 13 minutes 12 seconds.
6-5 1
----- = -- or -6 << the answer :)
3-(-3) 6
Answer:
The relative class frequency for the lowest class is 0.2.
Step-by-step explanation:
The given frequency table is
Ages Frequency
40-50 10
50-60 28
60-70 12
Total 50
It means sample size is 50.
Formula for relative frequency is
We need to find the relative class frequency for the lowest class.
So, relative class frequency for class interval 40-50.
Therefore, the relative class frequency for the lowest class is 0.2.
Answer:
1.) $10.50 + $3.50n
2.) Replace the variable with the given number. In this case, the given number is 20.
n = 20
$10.50 + $3.50(20)
$10.50 + $70 = $80.50
So, the total cost to visit the fair is $80.50.
You can find it out yourself just keep trying
