Find the perimeter of the polygon described. Answer the question with a sentence.A piece of a jigsaw puzzle is in the shape shown. What is the perimeter of the jigsaw puzzle piece?
A. The perimeter of the jigsaw puzzle piece is 13.93 cm.
B. The perimeter of the jigsaw puzzle piece is 14.83 cm.
C. The perimeter of the jigsaw puzzle piece is 21.13 cm.
D. The perimeter of the jigsaw puzzle piece is 7.63 cm.
Answer: C
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Solve using matrices. 5x + y = 23 3x + 3y = 9
A. (-2, -5) B. (5, -2) C. (5, -5) D. (-2, 5)
Use a graphing calculator to graph the function using the given viewing window. Use the graph to decide if the function is one-to-one. If the function is one-to-one, give the equation of the inverse function.f(x) = 
; [-8, 8] by [-8, 8]
A. not one-to-one
B. one-to-one; f-1(x) = 
C. one-to-one; f-1(x) = 
D. one-to-one; f-1(x) = 
Simplify the expression by using a sum or difference identity.cos(12k) cos (9k) - sin(12k) sin (9k)
A. sin(21k) B. cos(3k) C. sin(3k) D. cos(21k)
Use the table to determine the probability. Round your answer to three decimal places if necessary.In a recent year, the percentage of computer games sold is summarized in the following table:Game Type
What is the probability that a computer game sold was a family or role playing game?
A. 0.723 B. 0.193 C. 0.277 D. 0.084