Find the probability.A family has five children. The probability of having a girl is 1/2. What is the probability of having at least 3 boys?
A. 0.5000
B. 0.3125
C. 0.1563
D. 0.4688
Answer: A
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Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(-5, 12); Find sin ?.
A. 
B. - 
C. - 
D. 
Solve the problem.Suppose that there is no straight path for driving between towns A and B. To drive from Town A to Town B, it is necessary to travel due east for 21 miles, then due north for 18 miles. How far apart, to the nearest tenth of a mile, are the towns?
A. 345.0 mi B. 27.7 mi C. 6.2 mi D. 459.0 mi
Solve the problem.One end of a wire that is 13 meters long is attached to the top of a tower. The other end of the wire is staked to the ground so that the wire is taut. The distance from the top of the tower to the bottom of the tower is 7 meters greater than the distance from the bottom of the tower to where the wire is staked down. How far is the stake from the base of the tower?
A. 5 meters B. 4 meters C. 12 meters D. 13 meters
Solve.A pulley rotates through 51° in one minute. How many rotations does the pulley make in an hour?
A. 153.0 rotations B. 306.0 rotations C. 17.0 rotations D. 8.5 rotations