Use the appropriate sum or difference identity to write the given expression as a function of x alone.tan (x - 2?)
A. tan x
B. 
C. -tan x
D. 
Answer: A
Mathematics
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Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = -4.66x2 - 45.67x + 345.67 B. y = 0.54x2 + 60.05x + 912.48 C. y= -0.7803 + 98.39x - 419.89 D. y = -0.54x2 + 60.05x + 912.48
Mathematics
Find the requested value.Find sin ? if tan ? = - 
and cos ? = 
.
A. 
B. 
C. - 
D. - 
Mathematics
Factor completely. If the polynomial is prime, state this.81k3m - 126k2m2 + 49km3
A. km(9k - 7m)(9k + 7m) B. km(9k + 7m)2 C. Prime D. km(9k - 7m)2
Mathematics
Determine algebraically whether the function is even, odd, or neither even nor odd.f(x) = x + 
A. Even B. Odd C. Neither
Mathematics