Add or subtract as indicated. Simplify, if necessary.
- 
A. - 
B. 
C. 
D. - 
Answer: D
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Write a system of equations associated with the augmented matrix. Do not try to solve.
A. x = 5 y = 5 z = 0 B. x = 2 y = 2 z = 7 C. x = -2 y = -2 z = -7 D. x = 0 y = -4 z = -9
Use inductive reasoning to predict the next line in the pattern.18 + 81 = 9919 + 91 = 110
A. 20 + 101 = 162 B. 20 + 101 = 121 C. 101 + 20 = 121 D. 88 + 33 = 121
Translate the problem to a system of equations, then solve using matrices.A basketball fieldhouse seats 15,000. Courtside seats sell for $8, endzone for $6, and balcony for $5. The total revenue from a sell-out is $86,000. If half the courtside and balcony seats and all the endzone seats are sold, the total revenue is $49,000. How many of each type are there?
A. 3000 courtside, 3000 endzone, 8,000 balcony B. 3000 courtside, 2000 endzone, 10,000 balcony C. 4000 courtside, 3000 endzone, 8000 balcony D. 3200 courtside, 1800 endzone, 10,000 balcony
Is the pair of vectors 
and 
perpendicular?
?
A. no B. yes