Simplify the factorial expression.
A. 
B. n - 4
C. (n - 4)!
D. 
Answer: B
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Solve the problem.Twenty-five random digits were generated to simulate spinning the spinner. If landing on A is simulated by the digits 0, 1, or 2; landing on B by 3, 4, or 5; and landing on C by 6, 7, 8, or 9; determine the probability that the spinner lands on B.
16825 27482 97858 05642 88047
A. 
B. 
C. 
D. 
Write the expression as a complex number in the form a + bi.
+ 
A. 0 + 13i B. 0 - 13i C. -13 + 0i D. 0 + 36i
Solve the following system by any appropriate method. If there is no real number solution, so state.8x2 + 5y2 = 20y = x + 2
A. (0, 2), (
, 
)
B. (0, -2), (- 
, 
)
C. (0, -2), (
, 
)
D. (0, 2), (- 
, 
)
Write the vector v in the form v1i + v2j, given 
and the direction angle ? of v.
= 10, ? = 180°
A. 10j B. -10j C. -10i - 10j D. -10i