Use a graphing calculator to find the vertex of the graph of the function.f(x) = -0.5x2 + 0.1x - 8.1
A. (0.1, -8.105)
B. (-0.1, 8.095)
C. (0.1, -8.095)
D. (0.1, -8.1)
Answer: C
Mathematics
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A. Yes B. No
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. 
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Solve for the specified variable. Assume that all other variables are nonzero.P = 
; for Q
A. Q = 
B. Q = ± 
C. Q = ± 
D. Q = 
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Convert. When necessary, round the answer to two decimal places.75 feet to yards
A. 225 B. 25 C. 8.33 D. 2700
Mathematics