Simplify.(-2x6y6)(5xy5)(4x6y)
A. 7x13y12
B. 7x36y30
C. -40x36y30
D. -40x13y12
Answer: D
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Construct a probability model for the experiment.Rolling a 6-sided fair die twice
What will be an ideal response?
Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 18 seconds, the middle planet makes a revolution in 30 seconds, and the outermost planet makes a revolution in 42 seconds. After how many seconds will the planets be aligned again?
A. 1260 seconds B. 630 seconds C. 315 seconds D. 945 seconds
Solve the problem.The function F described by F(x) = 2.75x + 71.48 can be used to estimate the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long. Estimate the height of a woman whose humerus is 
long. Round your answer to the nearest four decimal places.
A. 13.5775 cm B. 43.3000 cm C. 105.1600 cm D. 156.5375 cm
The campus newspaper has room to publish six letters to the editor. The editor decides to print two letters from six about cafeteria food, two from seven letters complaining about the final exam schedule, and two from ten letters congratulating the debate team on winning a tournament. How many ways can the editor select the six letters?
What will be an ideal response?