Solve the system by elimination.4x2 - y2 = 27x2 + 2y2 = 27
A. (3, 3), (3, -3), (-3, 3), (-3, -3)
B. (3, 9), (3, -9), (-3, 9), (-3, -9)
C. (3
, 3), (3
, -3), (-3
, 3), (-3
, -3)
D. empty set
Answer: A
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As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The sample consists of
A. the 33 red marbles drawn by the student. B. the 1000 marbles in the container. C. the 200 red marbles in the container. D. the 150 marbles drawn by the student. E. none of these
Perform the indicated operation and write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Find the second derivative of the function.
?
?
A. 
B. ?
C. ?
D. ?
Use a vertical format to add the polynomials.1.1x3 + 7.3x2 + 4.5 6.1x - 2.9
A. 12.4x6 + 11.3 B. 1.1x3 + 10.4x2 + 5.1x - 8.1 C. 1.1x3 + 4.2x2 + 7.1x + 11.3 D. 1.1x3 + 4.2x2 + 6.1x + 11.3