Determine the value of the literal numbers in the given matrix equality.
= 
A. x = -2, y = -6, z = 9
B. x = -2, y = 5, z = 9
C. x = -2, y = 5, z = -6
D. x = 5, y = -2, z = 9
Answer: B
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Solve the problem.Find the center of mass of the region of density 
bounded by the paraboloid 
and the xy-plane.
A. 
= 0, 
= 0, 
= 2
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 
D. 
= 0, 
= 0, 
= 1
Solve the equation.ln x + ln (x +1) = ln 30
A. x = 6, x = -5
B. x = 
C. x = 6
D. x = -6, x = 5
Use the circle graph to answer the question.Last year, one family ate fast food 576 times. The circle graph shows the types of food eaten for the year. Find the number of times fish was eaten.
A. 144 times B. 36 times C. 192 times D. 72 times
If one of the students is selected at random what is the probability he or she spent exactly 3 hours in the lab?
Use the following information to answer question, 24 students in an engineering class were asked to record the number of hours spent in a lab during a week. The results are listed below. 3, 10, 21, 14, 8, 5, 1, 4, 13, 7, 9, 6, 11, 10, 6, 7, 12, 16, 1 , 7, 14, 1, 11, 8