Perform the indicated operations.( 4x2 + 11xy - 10) + ( 4x2 - 6x + 2) + ( -x2 - y - 5)
A. 9x2 + 11xy - 7x - 7y - 14
B. 8x2 + 3xy - 7
C. 7x2 + 11xy - 6x - y - 13
D. 7x2 + 4xy - 13
Answer: C
Mathematics
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A. 2 B. 1 C. N D. N - 1 E. none of these
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Perform the indicated operation by hand.14.6 + 14.8
A. -0.2 B. 29.5 C. 0.2 D. 29.4
Mathematics
Find the probability of the event if a single choice is made from a bag.A bag contains 2 red marbles, 8 blue marbles, and 5 green marbles. What is the probability of choosing a blue marble when one marble is drawn?
A. 
B. 
C. 
D. 
Mathematics
Solve. Clear fractions first.
r + 2 = 
r + 
A. 4 B. 3 C. -4 D. -12
Mathematics