Find the acute angle, in radians, between the lines.-5x - 6y = -8 and 2x - 9y = 1
A. 0.6111 radians
B. 2.484 radians
C. 0.9133 radians
D. 0.6574 radians
Answer: C
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Find the center and radius of the circle.x2 + y2 - 4x - 18y = -36
A. (9, 2), r = 7 B. (-9, -2), r = 49 C. (2, 9), r = 7 D. (-2, -9), r = 49
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 
Solve the equation.
log (x + 4) -1 = 0
A. 996 B. 96 C. 104 D. -2
Solve.A basketball fieldhouse seats 15,000. Courtside seats sell for $8, endzone for $6, and balcony for $4. The total revenue from a sell-out is $76,000. If half the courtside and balcony seats and all the endzone seats are sold, the total revenue is $44,000. How many of each type are there?
A. 3000 courtside; 2000 endzone; 10,000 balcony B. 3200 courtside; 1800 endzone; 10,000 balcony C. 3000 courtside; 3000 endzone; 8,000 balcony D. 4000 courtside; 3000 endzone; 8000 balcony