Solve the problem.How many liters of a 20% alcohol solution must be mixed with 20 liters of a 60% solution to get a 30% solution?
A. 8 L
B. 60 L
C. 6 L
D. 80 L
Answer: B
Mathematics
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Compute the difference. Express answer in simplest form.
- 
A. 
B. 
C. 
D. 
Mathematics
The general term of a sequence is given. Find the indicated partial sum. an = 
; S4
A. 
B. 
C. - 
D. - 
Mathematics
Write the whole number in standard form.Seventy thousand, nine hundred eighty-one
A. 700,981 B. 7981 C. 70,081 D. 70,981
Mathematics
Differentiate.
Mathematics