Solve the problem.How many liters of a 30% alcohol solution must be mixed with 60 liters of a 80% solution to get a 40% solution?
A. 240 L
B. 24 L
C. 30 L
D. 300 L
Answer: A
Mathematics
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The following table shows the population of a small town for the given date.
1980199020002010
553629692755What is the population in 2010?
What will be an ideal response?
Mathematics
Use the linear approximation (1 + x)k ? 1 + kx, as specified.Find an approximation for the function f(x) = 
for values of x near zero.
A. f(x) ? 
B. f(x) ? 
C. f(x) ? 
D. f(x) ? 6 - 
Mathematics
Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Mathematics
Complete the identity.cos 
= ?
A. - 
(cos x - sin x)
B. 
(cos x - sin x)
C. 
(
cos x - sin x)
D. - 
(cos x + sin x)
Mathematics