Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 45 marbles in it. At least how many green marbles does it have?
A. At least 30 green marbles
B. At least 16 green marbles
C. At least 23 green marbles
D. At least 15 green marbles
Answer: D
Mathematics
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Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. 7 ln 
- 
ln 
- tan-1 x + C
B. ln 
+ 
ln 
+ tan-1 
+ C
C. 7 ln 
+ 
ln 
+ 
tan-1 
+ C
D. 7 ln 
+ 
ln 
+ sin-1 
+ C
Mathematics
Find the derivative of the function.
?
?
A. 
B. 
C. 
D. 
Mathematics
Find the square root, rounded to hundredths if necessary.
A. 6.39 B. 2.53 C. 2.54 D. 2.56
Mathematics
Which method should be used to solve the system? Explain your answer, including a description of the first step.-5x2 - y2 =19x2 + 4y2 =64
What will be an ideal response?
Mathematics