Simplify the factorial expression.
A. 0!
B. 8
C. 1
D. 28
Answer: D
Mathematics
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Divide, if possible.-99 ÷ 9
A. -11
B. -21
C. 11
D. - 
Mathematics
Solve the problem.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 26 ft and the vertical clearance must be 10 ft at a point 12 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the value of the determinant.
A. 36 B. -36 C. 40 D. 52
Mathematics
Simplify the following by combining like terms.4x8 + 8x7 - 6x8
A. 6x23 B. -2x8 + 8x7 C. 6x7 D. cannot be simplified
Mathematics