Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the curves y = ± 
and the lines x = 1 and x = 9, with density ?(x) = 
A. 
= 4, 
= 0
B. 
= 2, 
= 0
C. 
= 5, 
= 0
D. 
= 3, 
= 0
Answer: D
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Write the fraction.At Smith's Apple Orchard one day, 53 people were picking apples, 13 people were picking pumpkins, and 34 people were picking raspberries. What fractional part of the people were picking either apples or pumpkins?
A. 
B. 
C. 
D. 
Provide an appropriate response.In a certain college, 33% of the math majors belong to foreign student. If 10 students are selected at random from the math majors, that is the probability that no more than 6 are foreign?
A. 0.913 B. 0.9846 C. 0.0547 D. 0.9815
Answer the question.In the "Big Bucks" lottery game, a person is to pick 4 digits from 0 to 9 in correct order. If a number can be repeated, how many ways are there to play the game?
A. 10,000 B. 100,000 C. 1,048,576 D. 262,144
Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.20y2 + 31y + 12
A. (20y + 3)(y + 4) B. prime C. (4y - 3)(5y - 4) D. (4y + 3)(5y + 4)