Solve the problem.In how many ways can a class president and a class secretary be chosen from a group of 8 candidates?
A. 336
B. 56
C. 16
D. 15
Answer: B
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Find the intersection.-6x - 4y = 5, -4y + 9z = -10
A. x = -36t - 
, y = 54t + 
, z = 24
B. x = -36t - 60, y = 54t - 10, z = 24t
C. x = -36t + 
, y = 54t - 
, z = -24t
D. x = -36t - 
, y = 54t + 
, z = 24t
Determine whether the circle with the given equation is symmetric to either axis or to the origin.x2 + y2 = 121
A. Symmetric to both axes B. Symmetric to origin C. Symmetric to both axes and origin D. Symmetric to x-axis and origin
Solve the problem.A famous golfer tees off on a long, straight 454 yard par 4 and slices his drive 11° to the right of the line from tee to the hole. If the drive went 271 yards, how many yards will the golfer's second shot have to be to reach the hole?
A. 721.9 yd B. 632.7 yd C. 195 yd D. 398.5 yd
Divide and simplify. Assume that all variables represent positive numbers. 
A. 2a2b4
B. 2ab2
C. 2ab4
D. 2ab2