Find the range of the quadratic function.f(x) = -x2 + 6x - 7
A. [2, ?)
B. (-?, 3]
C. (-?, 2]
D. [3, ?)
Answer: C
Mathematics
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Determine the indicated arc or angle.Find
.
A. 104° B. 28° C. 56° D. 112°
Mathematics
Use the fundamental identities to simplify the expression.
- tan x
A. cot x B. csc x C. tan2 x D. tan x
Mathematics
Decide whether the equation is or is not an identity.sin (? + ?) sin (? - ?) = sin2? - sin2?
A. Not an identity B. Identity
Mathematics
Solve the problem.Determine whether the ordered triple 
is a solution of the system of equations.9x - 9y - 6z = -116x + 3y - 3z = 1 x - y + 2z = -3
A. Yes B. No
Mathematics