Determine the domain of the variable x in the expression.f(x) = 
A. {x|x ? -8}
B. {x|x ? 0}
C. {x|x ? 8}
D. all real numbers
Answer: C
Mathematics
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Find the area of the shaded region.
A. 
B. 32
C. 
D. 
Mathematics
Write the system in the form 
Then solve the linear system by computing 
with a calculator. Round numbers to the nearest tenth, as necessary.1.2x - 0.9y - 5.0z = 2.95.0x + 4.1y + 1.3z = -3.63.1x - 1.6y - 1.4z = 8.7
A. (1.5, -2.8, 0.3) B. (7.5, -13.9, 1.4) C. (6.0, -11.2, 1.1) D. (3.0, -5.6, 0.6)
Mathematics
Find the product.(9x3y)(-2x6y4)
A. 7x18y4 B. 7x9y5 C. -18x9y5 D. -18x9y4
Mathematics
Find the center and radius of the circle.x2 + y2 = 36
A. Center: (0, 0); radius: 6 B. Center: (1, 1); radius: 36 C. Center: (1, 1) ; radius: 6 D. Center: (0, 0) ; radius: 36
Mathematics