For the given pair of functions, find the requested function.f(x) = 5x - 3, g(x) = -7x2 - 11x + 9; (f + g)(x)
A. -8x2 - 6x - 6
B. 7x2 - 2x - 12
C. -7x2 - 6x + 6
D. -7x2 + 6x + 6
Answer: C
Mathematics
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.-2x - 3y - 10z = 9 and 2x + 9y - 5z = 4
A. 1.327 rad B. 1.4 rad C. 1.436 rad D. 0.171 rad
Mathematics
Provide an appropriate response. Solve the system of equations using the addition method: 5x - y = -32x + 3y = -25
A. (-1, -2) B. (-5, -5) C. (2, 13) D. (-2, -7)
Mathematics
Use the square root method to solve the equation. y2 - 20 = 0
A. 10
B. ± 2
C. 400
D. 
Mathematics
Use a double-angle identity to evaluate the expression.cos 
A. - 
B. 
C. 
D. - 
Mathematics