Answer:
3876
Step-by-step explanation:
Given the following :
Fraternity members = 20
They are to attend 5 different parties in groups of 4
Meaning a group = 4 persons
Atleast one brother will attend exactly one of the parties. (the brothers are indistinguishable).
Then, exactly one brother at a party (20 - 1) = 19, since they are indistinguishable.
Group members are in 4's
19C4
From: nCr = n! /(n-r)! r!
19C4 = 19! / (19 - 4)! 4!
= 19! / 15! 4!
= (19 * 18 * 17 * 16) / (4 * 3 * 2)
= 93024 / 24
= 3876
Answer:
$7.90
Step-by-step explanation:
8.25 multiplied by 2 is 16.50. so 24.40 minus 16.50 is 7.90
which makes the answer $7.90
STEP 1:
put numbers in order from lowest to highest
517, 517, 565, 627, 714, 728, 867, 961
STEP 2:
find the difference between the lowest and highest numbers
961 - 517= 444 ft^2 range
ANSWER: The range of the areas is 444 ft^2.
Hope this helps! :)
Answer:
The concentration of salt in the tank approaches 
Step-by-step explanation:
Data provide in the question:
Water contained in the tank = 8000 L
Salt per litre contained in Brine = 35 g/L
Rate of pumping water into the tank = 25 L/min
Concentration of salt 
Now,
Dividing both numerator and denominator by 
, we have
Here,
The concentration of salt in the tank approaches
