$20
Step-by-step explanation:
I'm high a.f. but I'm certain it's $20
the triangle could only be proven isosceles if it was proven or given that SP = SR or thatangles PQS = RQS otherwise the reasoning is incomplete
18 is an even number because if you divide 18 ÷ 2 = 9 it guves you an odd number
Answer:
The records can be select in 332,640 ways.
Step-by-step explanation:
Consider the provided information.
There are 11 records to select from and a disc jokey can play 6 records.
Here, we need to find the number of permutation of n = 11 records taken r = 6 at a time.
Use the formula: 
Substitute the respective values in the above formula.




Hence, the records can be select in 332,640 ways.
1week = 7days so
4weeks = 28 days
So 28 x 640 = 17920
1000grams = 1kg
17920 divide 1000 =17.92
Lee uses 17.92kg in those 4weeks