Solve the equation on the interval 0 ? ? < 2?.cos2 ? - 1 = 0
A. 
B. 0
C. 0, ?
D. 
, 
Answer: C
Mathematics
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Provide an appropriate response.Find the equation of the line that is perpendicular to the line 6x + 4y = 12 and passes through the point (0, -2). Write the equation in standard form.
A. 2x - 3y = 6 B. 6x + 4y = -2 C. x + 6y = -12 D. 2x - 3y = 4
Mathematics
Determine the real solutions to the system of nonlinear equations.x2 - y2 = 23x2 + y2 = 33
A. (2
, 
), (-2
, 
)
B. (2
, 
), (-2
, -
)
C. (2
, 
), (-2
, 
), (2
, -
), (-2
, -
)
D. (0, 0)
Mathematics
Answer the question.If the vertex of the graph of a quadratic function lies in quadrant III and the graph is concave down, how many x-intercepts does the graph have?
A. 1 B. 3 C. 0 D. 2
Mathematics
Solve.Let f(x) = (x - 5)2. Find x so that f(x) = 12.
A. 5 + 2
B. 149
C. -7, 17
D. 5 + 2
, 5 - 2
Mathematics