Identify the type of sampling described by the proposal.A lobbyist for the oil industry assigns a number to each senator and then uses a computer to randomly generate ten numbers. The lobbyist contacts the senators corresponding to these numbers.
A. convenience sample
B. stratified sample
C. cluster sample
D. simple random sample
E. systematic sample
Answer: D
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Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x + 3y = 26-3x + 2y = -12
A. {(7, 7)} B. {(8, 6)} C. {(-8, 7)} D. Cramer's rule does not apply since D = 0; ?
Complete the magic (addition) square.Use each number 6, 7, 8, 9, 10, 11, 12, 13, and 14 once.
A. 
B. 
C. 
D. 
Find the exact values of the remaining trigonometric functions of ? from the given information.sin ? = - 
, ? in quadrant III
A. sin ? = - 
cos ? = - 
tan ? = - 
csc ? = - 
sec ? = - 
cot ? = - 
B. sin ? = - 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
C. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
D. sin ? = - 
cos ? = - 
tan ? = 
csc ? = - 
sec ? = - 
cot ? = 
Decide whether the relation defines a function.y = 
A. Not a function B. Function